./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Addition02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_083308cc-5d1b-404e-9ee0-35e24cd85336/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_083308cc-5d1b-404e-9ee0-35e24cd85336/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_083308cc-5d1b-404e-9ee0-35e24cd85336/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_083308cc-5d1b-404e-9ee0-35e24cd85336/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Addition02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_083308cc-5d1b-404e-9ee0-35e24cd85336/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_083308cc-5d1b-404e-9ee0-35e24cd85336/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 4f9a38be18608b9918f157c72437435dc654871f ............................................................................................................................................................................................................................................................................................................................ 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-cad4683 [2019-11-15 23:33:03,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:33:03,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:33:03,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:33:03,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:33:03,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:33:03,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:33:03,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:33:03,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:33:03,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:33:03,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:33:03,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:33:03,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:33:03,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:33:03,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:33:03,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:33:03,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:33:03,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:33:03,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:33:03,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:33:03,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:33:03,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:33:03,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:33:03,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:33:03,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:33:03,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:33:03,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:33:03,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:33:03,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:33:03,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:33:03,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:33:03,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:33:03,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:33:03,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:33:03,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:33:03,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:33:03,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:33:03,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:33:03,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:33:03,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:33:03,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:33:03,617 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_083308cc-5d1b-404e-9ee0-35e24cd85336/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:33:03,632 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:33:03,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:33:03,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:33:03,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:33:03,635 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:33:03,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:33:03,635 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:33:03,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:33:03,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:33:03,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:33:03,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:33:03,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:33:03,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:33:03,637 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:33:03,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:33:03,637 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:33:03,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:33:03,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:33:03,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:33:03,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:33:03,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:33:03,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:33:03,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:33:03,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:33:03,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:33:03,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:33:03,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:33:03,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:33:03,641 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_083308cc-5d1b-404e-9ee0-35e24cd85336/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 -> 4f9a38be18608b9918f157c72437435dc654871f [2019-11-15 23:33:03,671 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:33:03,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:33:03,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:33:03,688 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:33:03,688 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:33:03,689 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_083308cc-5d1b-404e-9ee0-35e24cd85336/bin/uautomizer/../../sv-benchmarks/c/recursive/Addition02.c [2019-11-15 23:33:03,748 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_083308cc-5d1b-404e-9ee0-35e24cd85336/bin/uautomizer/data/28c4ce17e/798d4edba3234501b0a33e0597bba24b/FLAG0ac49976a [2019-11-15 23:33:04,179 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:33:04,182 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_083308cc-5d1b-404e-9ee0-35e24cd85336/sv-benchmarks/c/recursive/Addition02.c [2019-11-15 23:33:04,188 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_083308cc-5d1b-404e-9ee0-35e24cd85336/bin/uautomizer/data/28c4ce17e/798d4edba3234501b0a33e0597bba24b/FLAG0ac49976a [2019-11-15 23:33:04,207 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_083308cc-5d1b-404e-9ee0-35e24cd85336/bin/uautomizer/data/28c4ce17e/798d4edba3234501b0a33e0597bba24b [2019-11-15 23:33:04,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:33:04,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:33:04,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:33:04,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:33:04,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:33:04,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:33:04" (1/1) ... [2019-11-15 23:33:04,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c328f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:04, skipping insertion in model container [2019-11-15 23:33:04,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:33:04" (1/1) ... [2019-11-15 23:33:04,230 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:33:04,250 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:33:04,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:33:04,497 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:33:04,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:33:04,528 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:33:04,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:04 WrapperNode [2019-11-15 23:33:04,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:33:04,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:33:04,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:33:04,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:33:04,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:04" (1/1) ... [2019-11-15 23:33:04,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:04" (1/1) ... [2019-11-15 23:33:04,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:33:04,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:33:04,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:33:04,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:33:04,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:04" (1/1) ... [2019-11-15 23:33:04,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:04" (1/1) ... [2019-11-15 23:33:04,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:04" (1/1) ... [2019-11-15 23:33:04,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:04" (1/1) ... [2019-11-15 23:33:04,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:04" (1/1) ... [2019-11-15 23:33:04,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:04" (1/1) ... [2019-11-15 23:33:04,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:04" (1/1) ... [2019-11-15 23:33:04,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:33:04,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:33:04,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:33:04,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:33:04,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_083308cc-5d1b-404e-9ee0-35e24cd85336/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 [2019-11-15 23:33:04,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:33:04,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:33:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2019-11-15 23:33:04,662 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2019-11-15 23:33:05,005 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:33:05,005 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 23:33:05,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:33:05 BoogieIcfgContainer [2019-11-15 23:33:05,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:33:05,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:33:05,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:33:05,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:33:05,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:33:04" (1/3) ... [2019-11-15 23:33:05,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a3d309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:33:05, skipping insertion in model container [2019-11-15 23:33:05,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:04" (2/3) ... [2019-11-15 23:33:05,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a3d309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:33:05, skipping insertion in model container [2019-11-15 23:33:05,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:33:05" (3/3) ... [2019-11-15 23:33:05,015 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition02.c [2019-11-15 23:33:05,041 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:33:05,050 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:33:05,080 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:33:05,120 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:33:05,121 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:33:05,121 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:33:05,121 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:33:05,121 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:33:05,121 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:33:05,122 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:33:05,123 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:33:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-15 23:33:05,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:33:05,154 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:33:05,155 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:33:05,157 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:33:05,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:33:05,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2068195676, now seen corresponding path program 1 times [2019-11-15 23:33:05,173 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:33:05,174 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045610588] [2019-11-15 23:33:05,174 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:33:05,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:33:05,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:33:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:33:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:33:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:05,489 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045610588] [2019-11-15 23:33:05,490 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:33:05,490 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 23:33:05,490 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869722274] [2019-11-15 23:33:05,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:33:05,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:33:05,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:33:05,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:33:05,512 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 7 states. [2019-11-15 23:33:05,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:33:05,770 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2019-11-15 23:33:05,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:33:05,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-11-15 23:33:05,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:33:05,781 INFO L225 Difference]: With dead ends: 33 [2019-11-15 23:33:05,781 INFO L226 Difference]: Without dead ends: 20 [2019-11-15 23:33:05,787 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:33:05,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-15 23:33:05,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-15 23:33:05,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-15 23:33:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-11-15 23:33:05,848 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2019-11-15 23:33:05,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:33:05,850 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-11-15 23:33:05,850 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:33:05,850 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2019-11-15 23:33:05,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 23:33:05,853 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:33:05,853 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:33:05,854 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:33:05,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:33:05,855 INFO L82 PathProgramCache]: Analyzing trace with hash 800728349, now seen corresponding path program 1 times [2019-11-15 23:33:05,855 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:33:05,855 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900634350] [2019-11-15 23:33:05,856 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:33:05,856 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:33:05,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:33:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:33:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:33:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:05,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900634350] [2019-11-15 23:33:05,939 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:33:05,939 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:33:05,939 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25380028] [2019-11-15 23:33:05,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:33:05,941 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:33:05,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:33:05,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:33:05,942 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 4 states. [2019-11-15 23:33:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:33:05,969 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2019-11-15 23:33:05,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:33:05,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-15 23:33:05,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:33:05,971 INFO L225 Difference]: With dead ends: 30 [2019-11-15 23:33:05,971 INFO L226 Difference]: Without dead ends: 22 [2019-11-15 23:33:05,972 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:33:05,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-15 23:33:05,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-11-15 23:33:05,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-15 23:33:05,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-15 23:33:05,980 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2019-11-15 23:33:05,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:33:05,980 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-15 23:33:05,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:33:05,980 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-15 23:33:05,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 23:33:05,981 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:33:05,982 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:33:05,982 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:33:05,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:33:05,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1352688745, now seen corresponding path program 1 times [2019-11-15 23:33:05,983 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:33:05,983 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271934414] [2019-11-15 23:33:05,983 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:33:05,983 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:33:05,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:33:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:33:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:33:06,030 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:33:06,031 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:33:06,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:33:06 BoogieIcfgContainer [2019-11-15 23:33:06,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:33:06,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:33:06,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:33:06,074 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:33:06,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:33:05" (3/4) ... [2019-11-15 23:33:06,077 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 23:33:06,138 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_083308cc-5d1b-404e-9ee0-35e24cd85336/bin/uautomizer/witness.graphml [2019-11-15 23:33:06,138 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:33:06,142 INFO L168 Benchmark]: Toolchain (without parser) took 1928.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -99.5 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:33:06,147 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:33:06,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -182.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:33:06,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.67 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. [2019-11-15 23:33:06,149 INFO L168 Benchmark]: Boogie Preprocessor took 25.44 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. [2019-11-15 23:33:06,157 INFO L168 Benchmark]: RCFGBuilder took 416.25 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:33:06,158 INFO L168 Benchmark]: TraceAbstraction took 1065.12 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: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:33:06,158 INFO L168 Benchmark]: Witness Printer took 64.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:33:06,161 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 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 315.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -182.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.67 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 25.44 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 416.25 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1065.12 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: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 11.5 GB. * Witness Printer took 64.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 43]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L27] int m = __VERIFIER_nondet_int(); [L28] COND FALSE !(m < 0 || m > 1073741823) [L33] int n = __VERIFIER_nondet_int(); [L34] COND FALSE !(n < 0 || n > 1073741823) [L39] CALL, EXPR addition(m,n) VAL [\old(m)=0, \old(n)=1] [L14] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L17] COND TRUE n > 0 VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L18] CALL, EXPR addition(m+1, n-1) VAL [\old(m)=1, \old(n)=0] [L14] COND TRUE n == 0 [L15] return m; VAL [\old(m)=1, \old(n)=0, \result=1, m=1, n=0] [L18] RET, EXPR addition(m+1, n-1) VAL [\old(m)=0, \old(n)=1, addition(m+1, n-1)=1, m=0, n=1] [L18] return addition(m+1, n-1); [L39] RET, EXPR addition(m,n) [L39] int result = addition(m,n); [L40] COND FALSE !(result == m - n) [L43] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 30 SDslu, 60 SDs, 0 SdLazy, 96 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 784 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...