./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ddd756a6-a4d3-454e-8eb4-8313ab399481/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ddd756a6-a4d3-454e-8eb4-8313ab399481/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ddd756a6-a4d3-454e-8eb4-8313ab399481/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ddd756a6-a4d3-454e-8eb4-8313ab399481/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ddd756a6-a4d3-454e-8eb4-8313ab399481/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ddd756a6-a4d3-454e-8eb4-8313ab399481/bin/uautomizer --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 a5108b5377d097a7402b9724bf53ce3710eed7c6 ................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 14:26:26,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:26:26,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:26:26,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:26:26,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:26:26,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:26:26,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:26:27,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:26:27,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:26:27,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:26:27,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:26:27,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:26:27,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:26:27,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:26:27,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:26:27,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:26:27,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:26:27,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:26:27,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:26:27,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:26:27,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:26:27,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:26:27,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:26:27,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:26:27,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:26:27,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:26:27,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:26:27,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:26:27,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:26:27,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:26:27,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:26:27,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:26:27,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:26:27,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:26:27,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:26:27,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:26:27,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:26:27,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:26:27,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:26:27,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:26:27,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:26:27,019 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ddd756a6-a4d3-454e-8eb4-8313ab399481/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 14:26:27,029 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:26:27,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:26:27,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:26:27,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:26:27,030 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:26:27,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:26:27,030 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:26:27,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:26:27,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:26:27,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:26:27,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:26:27,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:26:27,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:26:27,031 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:26:27,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:26:27,031 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:26:27,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:26:27,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:26:27,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:26:27,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:26:27,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:26:27,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:26:27,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:26:27,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:26:27,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:26:27,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 14:26:27,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:26:27,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:26:27,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:26:27,033 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_ddd756a6-a4d3-454e-8eb4-8313ab399481/bin/uautomizer 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 -> a5108b5377d097a7402b9724bf53ce3710eed7c6 [2019-12-07 14:26:27,132 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:26:27,143 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:26:27,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:26:27,147 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:26:27,147 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:26:27,148 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ddd756a6-a4d3-454e-8eb4-8313ab399481/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c [2019-12-07 14:26:27,190 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ddd756a6-a4d3-454e-8eb4-8313ab399481/bin/uautomizer/data/dbae8d148/377b821a4afd4450b69163fae738dadc/FLAG1d81c787e [2019-12-07 14:26:27,601 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:26:27,602 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ddd756a6-a4d3-454e-8eb4-8313ab399481/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c [2019-12-07 14:26:27,605 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ddd756a6-a4d3-454e-8eb4-8313ab399481/bin/uautomizer/data/dbae8d148/377b821a4afd4450b69163fae738dadc/FLAG1d81c787e [2019-12-07 14:26:27,614 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ddd756a6-a4d3-454e-8eb4-8313ab399481/bin/uautomizer/data/dbae8d148/377b821a4afd4450b69163fae738dadc [2019-12-07 14:26:27,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:26:27,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:26:27,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:26:27,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:26:27,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:26:27,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:26:27" (1/1) ... [2019-12-07 14:26:27,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f27cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:26:27, skipping insertion in model container [2019-12-07 14:26:27,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:26:27" (1/1) ... [2019-12-07 14:26:27,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:26:27,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:26:27,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:26:27,735 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:26:27,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:26:27,788 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:26:27,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:26:27 WrapperNode [2019-12-07 14:26:27,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:26:27,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:26:27,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:26:27,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:26:27,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:26:27" (1/1) ... [2019-12-07 14:26:27,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:26:27" (1/1) ... [2019-12-07 14:26:27,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:26:27,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:26:27,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:26:27,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:26:27,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:26:27" (1/1) ... [2019-12-07 14:26:27,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:26:27" (1/1) ... [2019-12-07 14:26:27,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:26:27" (1/1) ... [2019-12-07 14:26:27,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:26:27" (1/1) ... [2019-12-07 14:26:27,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:26:27" (1/1) ... [2019-12-07 14:26:27,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:26:27" (1/1) ... [2019-12-07 14:26:27,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:26:27" (1/1) ... [2019-12-07 14:26:27,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:26:27,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:26:27,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:26:27,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:26:27,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:26:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddd756a6-a4d3-454e-8eb4-8313ab399481/bin/uautomizer/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 [2019-12-07 14:26:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:26:27,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:26:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-12-07 14:26:27,861 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-12-07 14:26:27,952 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:26:27,952 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 14:26:27,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:26:27 BoogieIcfgContainer [2019-12-07 14:26:27,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:26:27,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:26:27,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:26:27,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:26:27,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:26:27" (1/3) ... [2019-12-07 14:26:27,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c55559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:26:27, skipping insertion in model container [2019-12-07 14:26:27,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:26:27" (2/3) ... [2019-12-07 14:26:27,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c55559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:26:27, skipping insertion in model container [2019-12-07 14:26:27,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:26:27" (3/3) ... [2019-12-07 14:26:27,957 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non_eq-3.c [2019-12-07 14:26:27,964 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:26:27,967 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:26:27,976 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:26:27,990 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:26:27,990 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:26:27,991 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:26:27,991 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:26:27,991 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:26:27,991 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:26:27,991 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:26:27,991 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:26:28,001 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-12-07 14:26:28,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 14:26:28,004 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:26:28,005 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:26:28,005 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:26:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:26:28,009 INFO L82 PathProgramCache]: Analyzing trace with hash 389977641, now seen corresponding path program 1 times [2019-12-07 14:26:28,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:26:28,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698483892] [2019-12-07 14:26:28,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:26:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:26:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:26:28,097 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:26:28,097 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:26:28,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:26:28 BoogieIcfgContainer [2019-12-07 14:26:28,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:26:28,113 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:26:28,113 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:26:28,113 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:26:28,114 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:26:27" (3/4) ... [2019-12-07 14:26:28,115 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 14:26:28,141 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ddd756a6-a4d3-454e-8eb4-8313ab399481/bin/uautomizer/witness.graphml [2019-12-07 14:26:28,141 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:26:28,143 INFO L168 Benchmark]: Toolchain (without parser) took 525.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -128.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:26:28,143 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:26:28,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:26:28,144 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:26:28,144 INFO L168 Benchmark]: Boogie Preprocessor took 10.76 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:26:28,144 INFO L168 Benchmark]: RCFGBuilder took 131.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:26:28,145 INFO L168 Benchmark]: TraceAbstraction took 159.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:26:28,145 INFO L168 Benchmark]: Witness Printer took 28.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:26:28,147 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.76 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 131.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 159.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 28.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int a = __VERIFIER_nondet_uint(); [L14] unsigned int b = __VERIFIER_nondet_uint(); [L15] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=0] [L5] COND TRUE n == 0 [L6] return m; VAL [\old(m)=0, \old(n)=0, \result=0, m=0, n=0] [L15] RET, EXPR sum(a, b) [L15] unsigned int result = sum(a, b); [L16] COND TRUE result == a + b [L17] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...