./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_non_eq-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/sum_non_eq-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 301c54c8b861008a1cf318e5b7f3396bc86db7c8 .................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 00:26:15,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:26:15,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:26:15,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:26:15,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:26:15,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:26:15,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:26:15,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:26:15,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:26:15,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:26:15,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:26:15,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:26:15,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:26:15,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:26:15,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:26:15,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:26:15,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:26:15,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:26:15,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:26:15,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:26:15,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:26:15,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:26:15,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:26:15,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:26:15,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:26:15,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:26:15,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:26:15,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:26:15,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:26:15,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:26:15,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:26:15,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:26:15,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:26:15,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:26:15,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:26:15,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:26:15,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:26:15,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:26:15,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:26:15,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:26:15,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:26:15,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:26:15,930 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:26:15,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:26:15,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:26:15,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:26:15,934 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:26:15,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:26:15,935 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:26:15,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:26:15,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:26:15,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:26:15,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:26:15,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:26:15,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:26:15,938 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:26:15,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:26:15,938 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:26:15,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:26:15,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:26:15,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:26:15,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:26:15,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:26:15,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:26:15,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:26:15,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:26:15,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:26:15,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:26:15,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:26:15,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:26:15,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 301c54c8b861008a1cf318e5b7f3396bc86db7c8 [2019-11-28 00:26:16,256 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:26:16,277 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:26:16,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:26:16,284 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:26:16,284 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:26:16,286 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/sum_non_eq-2.c [2019-11-28 00:26:16,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/529b1dfa7/f886958bf9e24a22a8f888c3b9542742/FLAG311941c95 [2019-11-28 00:26:16,824 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:26:16,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_non_eq-2.c [2019-11-28 00:26:16,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/529b1dfa7/f886958bf9e24a22a8f888c3b9542742/FLAG311941c95 [2019-11-28 00:26:17,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/529b1dfa7/f886958bf9e24a22a8f888c3b9542742 [2019-11-28 00:26:17,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:26:17,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:26:17,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:26:17,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:26:17,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:26:17,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:26:17" (1/1) ... [2019-11-28 00:26:17,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b69b6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:26:17, skipping insertion in model container [2019-11-28 00:26:17,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:26:17" (1/1) ... [2019-11-28 00:26:17,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:26:17,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:26:17,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:26:17,416 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:26:17,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:26:17,441 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:26:17,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:26:17 WrapperNode [2019-11-28 00:26:17,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:26:17,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:26:17,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:26:17,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:26:17,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:26:17" (1/1) ... [2019-11-28 00:26:17,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:26:17" (1/1) ... [2019-11-28 00:26:17,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:26:17,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:26:17,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:26:17,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:26:17,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:26:17" (1/1) ... [2019-11-28 00:26:17,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:26:17" (1/1) ... [2019-11-28 00:26:17,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:26:17" (1/1) ... [2019-11-28 00:26:17,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:26:17" (1/1) ... [2019-11-28 00:26:17,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:26:17" (1/1) ... [2019-11-28 00:26:17,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:26:17" (1/1) ... [2019-11-28 00:26:17,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:26:17" (1/1) ... [2019-11-28 00:26:17,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:26:17,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:26:17,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:26:17,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:26:17,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:26:17" (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 [2019-11-28 00:26:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:26:17,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:26:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-11-28 00:26:17,619 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-11-28 00:26:17,775 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:26:17,775 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 00:26:17,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:26:17 BoogieIcfgContainer [2019-11-28 00:26:17,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:26:17,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:26:17,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:26:17,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:26:17,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:26:17" (1/3) ... [2019-11-28 00:26:17,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604c3aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:26:17, skipping insertion in model container [2019-11-28 00:26:17,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:26:17" (2/3) ... [2019-11-28 00:26:17,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604c3aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:26:17, skipping insertion in model container [2019-11-28 00:26:17,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:26:17" (3/3) ... [2019-11-28 00:26:17,785 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non_eq-2.c [2019-11-28 00:26:17,793 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:26:17,798 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 00:26:17,810 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 00:26:17,836 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:26:17,836 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:26:17,836 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:26:17,837 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:26:17,837 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:26:17,837 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:26:17,837 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:26:17,837 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:26:17,856 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-28 00:26:17,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 00:26:17,862 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:26:17,863 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:26:17,863 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:26:17,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:26:17,869 INFO L82 PathProgramCache]: Analyzing trace with hash 389977641, now seen corresponding path program 1 times [2019-11-28 00:26:17,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:26:17,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45462444] [2019-11-28 00:26:17,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:26:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:26:18,358 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 17 [2019-11-28 00:26:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:26:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:26:18,440 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45462444] [2019-11-28 00:26:18,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:26:18,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 00:26:18,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787411595] [2019-11-28 00:26:18,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:26:18,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:26:18,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:26:18,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:26:18,469 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 6 states. [2019-11-28 00:26:18,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:26:18,593 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-11-28 00:26:18,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 00:26:18,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-11-28 00:26:18,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:26:18,605 INFO L225 Difference]: With dead ends: 27 [2019-11-28 00:26:18,606 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 00:26:18,609 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:26:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 00:26:18,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-28 00:26:18,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 00:26:18,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-11-28 00:26:18,652 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2019-11-28 00:26:18,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:26:18,653 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-11-28 00:26:18,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:26:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-11-28 00:26:18,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 00:26:18,655 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:26:18,655 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:26:18,656 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:26:18,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:26:18,656 INFO L82 PathProgramCache]: Analyzing trace with hash -881029229, now seen corresponding path program 1 times [2019-11-28 00:26:18,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:26:18,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051368670] [2019-11-28 00:26:18,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:26:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:26:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:26:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:26:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 00:26:19,018 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051368670] [2019-11-28 00:26:19,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006733671] [2019-11-28 00:26:19,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:26:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:26:19,070 WARN L253 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-28 00:26:19,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:26:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 00:26:19,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:26:19,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2019-11-28 00:26:19,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428439717] [2019-11-28 00:26:19,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 00:26:19,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:26:19,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 00:26:19,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-28 00:26:19,276 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 12 states. [2019-11-28 00:26:19,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:26:19,473 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-11-28 00:26:19,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 00:26:19,474 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2019-11-28 00:26:19,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:26:19,475 INFO L225 Difference]: With dead ends: 19 [2019-11-28 00:26:19,475 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:26:19,477 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2019-11-28 00:26:19,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:26:19,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:26:19,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:26:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:26:19,482 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-11-28 00:26:19,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:26:19,482 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:26:19,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 00:26:19,483 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:26:19,483 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:26:19,688 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:26:19,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:26:19,723 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:26:19,724 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:26:19,724 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:26:19,724 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2019-11-28 00:26:19,724 INFO L246 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-28 00:26:19,724 INFO L246 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2019-11-28 00:26:19,725 INFO L249 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2019-11-28 00:26:19,725 INFO L246 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2019-11-28 00:26:19,725 INFO L246 CegarLoopResult]: For program point L12(lines 12 19) no Hoare annotation was computed. [2019-11-28 00:26:19,725 INFO L246 CegarLoopResult]: For program point sumEXIT(lines 4 10) no Hoare annotation was computed. [2019-11-28 00:26:19,726 INFO L242 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (and (= sum_~m |sum_#in~m|) (= sum_~n |sum_#in~n|)) [2019-11-28 00:26:19,726 INFO L246 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2019-11-28 00:26:19,726 INFO L246 CegarLoopResult]: For program point L5(lines 5 9) no Hoare annotation was computed. [2019-11-28 00:26:19,726 INFO L246 CegarLoopResult]: For program point sumFINAL(lines 4 10) no Hoare annotation was computed. [2019-11-28 00:26:19,726 INFO L249 CegarLoopResult]: At program point sumENTRY(lines 4 10) the Hoare annotation is: true [2019-11-28 00:26:19,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:26:19 BoogieIcfgContainer [2019-11-28 00:26:19,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:26:19,735 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:26:19,735 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:26:19,736 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:26:19,736 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:26:17" (3/4) ... [2019-11-28 00:26:19,740 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:26:19,748 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2019-11-28 00:26:19,752 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 00:26:19,752 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 00:26:19,796 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:26:19,796 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:26:19,799 INFO L168 Benchmark]: Toolchain (without parser) took 2566.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 956.3 MB in the beginning and 1.0 GB in the end (delta: -62.8 MB). Peak memory consumption was 88.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:26:19,800 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:26:19,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.38 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 944.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-28 00:26:19,802 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -204.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:26:19,802 INFO L168 Benchmark]: Boogie Preprocessor took 18.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:26:19,803 INFO L168 Benchmark]: RCFGBuilder took 228.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2019-11-28 00:26:19,804 INFO L168 Benchmark]: TraceAbstraction took 1957.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 105.2 MB). Peak memory consumption was 105.2 MB. Max. memory is 11.5 GB. [2019-11-28 00:26:19,804 INFO L168 Benchmark]: Witness Printer took 61.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 00:26:19,808 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 208.38 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 944.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 86.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -204.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 228.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1957.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 105.2 MB). Peak memory consumption was 105.2 MB. Max. memory is 11.5 GB. * Witness Printer took 61.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 12 SDslu, 40 SDs, 0 SdLazy, 87 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 9 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 4688 SizeOfPredicates, 7 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...