./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9cf543c8-36b5-436a-b1ce-b337d90bf45c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9cf543c8-36b5-436a-b1ce-b337d90bf45c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9cf543c8-36b5-436a-b1ce-b337d90bf45c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9cf543c8-36b5-436a-b1ce-b337d90bf45c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9cf543c8-36b5-436a-b1ce-b337d90bf45c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9cf543c8-36b5-436a-b1ce-b337d90bf45c/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 0.1.24-6b5699a [2019-11-25 08:46:06,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:46:06,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:46:06,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:46:06,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:46:06,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:46:06,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:46:06,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:46:06,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:46:06,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:46:06,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:46:06,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:46:06,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:06,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:06,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:06,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:06,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:06,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:06,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:06,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:06,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:06,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:06,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:06,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:06,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:06,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:06,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:06,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:06,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:06,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:06,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:06,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:06,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:06,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:06,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:06,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:06,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:06,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:06,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:06,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:06,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:06,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9cf543c8-36b5-436a-b1ce-b337d90bf45c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:46:06,613 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:06,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:06,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:06,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:06,615 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:06,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:06,615 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:46:06,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:46:06,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:46:06,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:06,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:46:06,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:46:06,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:46:06,617 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:46:06,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:46:06,617 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:06,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:46:06,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:06,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:06,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:46:06,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:46:06,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:06,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:06,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:46:06,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:46:06,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:46:06,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:46:06,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:46:06,620 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_9cf543c8-36b5-436a-b1ce-b337d90bf45c/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 [2019-11-25 08:46:06,804 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:06,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:06,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:06,818 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:06,818 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:06,818 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9cf543c8-36b5-436a-b1ce-b337d90bf45c/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c [2019-11-25 08:46:06,881 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9cf543c8-36b5-436a-b1ce-b337d90bf45c/bin/uautomizer/data/edc363b38/8e7ce04175e04850901d614ea154900c/FLAG455d28245 [2019-11-25 08:46:07,236 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:07,237 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9cf543c8-36b5-436a-b1ce-b337d90bf45c/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c [2019-11-25 08:46:07,242 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9cf543c8-36b5-436a-b1ce-b337d90bf45c/bin/uautomizer/data/edc363b38/8e7ce04175e04850901d614ea154900c/FLAG455d28245 [2019-11-25 08:46:07,672 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9cf543c8-36b5-436a-b1ce-b337d90bf45c/bin/uautomizer/data/edc363b38/8e7ce04175e04850901d614ea154900c [2019-11-25 08:46:07,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:07,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:46:07,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:07,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:07,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:07,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:07" (1/1) ... [2019-11-25 08:46:07,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a761f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:07, skipping insertion in model container [2019-11-25 08:46:07,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:07" (1/1) ... [2019-11-25 08:46:07,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:07,705 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:07,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:07,876 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:07,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:07,990 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:07,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:07 WrapperNode [2019-11-25 08:46:07,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:07,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:07,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:46:07,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:46:08,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:07" (1/1) ... [2019-11-25 08:46:08,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:07" (1/1) ... [2019-11-25 08:46:08,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:08,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:08,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:08,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:08,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:07" (1/1) ... [2019-11-25 08:46:08,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:07" (1/1) ... [2019-11-25 08:46:08,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:07" (1/1) ... [2019-11-25 08:46:08,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:07" (1/1) ... [2019-11-25 08:46:08,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:07" (1/1) ... [2019-11-25 08:46:08,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:07" (1/1) ... [2019-11-25 08:46:08,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:07" (1/1) ... [2019-11-25 08:46:08,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:08,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:08,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:08,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:08,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cf543c8-36b5-436a-b1ce-b337d90bf45c/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 [2019-11-25 08:46:08,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:08,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:08,100 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-11-25 08:46:08,100 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-11-25 08:46:08,219 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:08,220 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:46:08,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:08 BoogieIcfgContainer [2019-11-25 08:46:08,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:08,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:46:08,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:46:08,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:46:08,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:46:07" (1/3) ... [2019-11-25 08:46:08,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7e20e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:08, skipping insertion in model container [2019-11-25 08:46:08,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:07" (2/3) ... [2019-11-25 08:46:08,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7e20e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:08, skipping insertion in model container [2019-11-25 08:46:08,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:08" (3/3) ... [2019-11-25 08:46:08,227 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non_eq-3.c [2019-11-25 08:46:08,236 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:46:08,241 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:46:08,251 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:46:08,272 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:46:08,272 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:46:08,272 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:46:08,272 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:08,272 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:08,273 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:46:08,273 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:08,273 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:46:08,288 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-25 08:46:08,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-25 08:46:08,292 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:08,293 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:08,293 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:08,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:08,299 INFO L82 PathProgramCache]: Analyzing trace with hash 389977641, now seen corresponding path program 1 times [2019-11-25 08:46:08,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:08,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241675099] [2019-11-25 08:46:08,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:08,420 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:08,420 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:46:08,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:46:08 BoogieIcfgContainer [2019-11-25 08:46:08,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:46:08,441 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:08,441 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:08,441 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:08,442 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:08" (3/4) ... [2019-11-25 08:46:08,444 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:46:08,479 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9cf543c8-36b5-436a-b1ce-b337d90bf45c/bin/uautomizer/witness.graphml [2019-11-25 08:46:08,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:08,481 INFO L168 Benchmark]: Toolchain (without parser) took 804.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -158.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:08,482 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:08,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -197.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:08,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.39 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. [2019-11-25 08:46:08,483 INFO L168 Benchmark]: Boogie Preprocessor took 17.14 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. [2019-11-25 08:46:08,484 INFO L168 Benchmark]: RCFGBuilder took 180.17 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: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:08,484 INFO L168 Benchmark]: TraceAbstraction took 219.01 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:08,485 INFO L168 Benchmark]: Witness Printer took 38.42 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:08,488 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 315.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -197.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.39 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. * Boogie Preprocessor took 17.14 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 180.17 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: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 219.01 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Witness Printer took 38.42 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: 6.7 MB). Peak memory consumption was 6.7 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...