./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_2x3-2.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_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_2x3-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/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 5484cff0bd7499490d21ca1aa6f81abc8cec50b0 ...................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:19:41,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:19:41,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:19:41,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:19:41,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:19:41,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:19:41,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:19:41,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:19:41,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:19:41,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:19:41,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:19:41,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:19:41,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:19:41,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:19:41,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:19:41,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:19:41,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:19:41,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:19:41,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:19:41,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:19:41,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:19:41,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:19:41,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:19:41,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:19:41,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:19:41,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:19:41,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:19:41,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:19:41,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:19:41,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:19:41,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:19:41,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:19:41,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:19:41,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:19:41,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:19:41,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:19:41,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:19:41,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:19:41,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:19:41,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:19:41,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:19:41,234 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 17:19:41,243 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:19:41,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:19:41,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:19:41,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:19:41,244 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:19:41,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:19:41,245 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:19:41,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:19:41,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:19:41,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:19:41,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:19:41,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:19:41,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:19:41,245 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:19:41,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:19:41,246 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:19:41,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:19:41,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:19:41,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:19:41,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:19:41,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:19:41,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:19:41,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:19:41,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:19:41,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:19:41,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:19:41,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:19:41,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:19:41,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:19:41,247 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_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/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 -> 5484cff0bd7499490d21ca1aa6f81abc8cec50b0 [2019-12-07 17:19:41,345 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:19:41,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:19:41,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:19:41,355 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:19:41,355 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:19:41,356 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/sum_2x3-2.c [2019-12-07 17:19:41,392 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/bin/uautomizer/data/a497867e4/6fa7e35251e346a48a1da667f8d2aac9/FLAG976c5c3d7 [2019-12-07 17:19:41,785 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:19:41,786 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/sv-benchmarks/c/recursive-simple/sum_2x3-2.c [2019-12-07 17:19:41,789 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/bin/uautomizer/data/a497867e4/6fa7e35251e346a48a1da667f8d2aac9/FLAG976c5c3d7 [2019-12-07 17:19:41,798 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/bin/uautomizer/data/a497867e4/6fa7e35251e346a48a1da667f8d2aac9 [2019-12-07 17:19:41,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:19:41,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:19:41,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:19:41,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:19:41,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:19:41,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:19:41" (1/1) ... [2019-12-07 17:19:41,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fbcd236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:41, skipping insertion in model container [2019-12-07 17:19:41,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:19:41" (1/1) ... [2019-12-07 17:19:41,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:19:41,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:19:41,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:19:41,921 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:19:41,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:19:41,971 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:19:41,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:41 WrapperNode [2019-12-07 17:19:41,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:19:41,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:19:41,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:19:41,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:19:41,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:41" (1/1) ... [2019-12-07 17:19:41,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:41" (1/1) ... [2019-12-07 17:19:41,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:19:41,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:19:41,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:19:41,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:19:41,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:41" (1/1) ... [2019-12-07 17:19:41,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:41" (1/1) ... [2019-12-07 17:19:41,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:41" (1/1) ... [2019-12-07 17:19:42,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:41" (1/1) ... [2019-12-07 17:19:42,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:41" (1/1) ... [2019-12-07 17:19:42,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:41" (1/1) ... [2019-12-07 17:19:42,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:41" (1/1) ... [2019-12-07 17:19:42,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:19:42,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:19:42,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:19:42,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:19:42,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/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 17:19:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:19:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:19:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-12-07 17:19:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-12-07 17:19:42,132 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:19:42,132 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 17:19:42,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:19:42 BoogieIcfgContainer [2019-12-07 17:19:42,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:19:42,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:19:42,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:19:42,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:19:42,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:19:41" (1/3) ... [2019-12-07 17:19:42,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54587b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:19:42, skipping insertion in model container [2019-12-07 17:19:42,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:41" (2/3) ... [2019-12-07 17:19:42,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54587b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:19:42, skipping insertion in model container [2019-12-07 17:19:42,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:19:42" (3/3) ... [2019-12-07 17:19:42,138 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_2x3-2.c [2019-12-07 17:19:42,144 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:19:42,148 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:19:42,155 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:19:42,169 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:19:42,169 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:19:42,169 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:19:42,169 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:19:42,169 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:19:42,169 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:19:42,170 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:19:42,170 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:19:42,180 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-12-07 17:19:42,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 17:19:42,183 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:19:42,184 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:19:42,184 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:19:42,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:19:42,188 INFO L82 PathProgramCache]: Analyzing trace with hash 389977641, now seen corresponding path program 1 times [2019-12-07 17:19:42,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:19:42,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594293512] [2019-12-07 17:19:42,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:19:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:19:42,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594293512] [2019-12-07 17:19:42,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:19:42,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 17:19:42,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079798343] [2019-12-07 17:19:42,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:19:42,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:19:42,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:19:42,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:19:42,355 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 5 states. [2019-12-07 17:19:42,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:19:42,406 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-12-07 17:19:42,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:19:42,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 17:19:42,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:19:42,414 INFO L225 Difference]: With dead ends: 24 [2019-12-07 17:19:42,414 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 17:19:42,416 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:19:42,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 17:19:42,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 17:19:42,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 17:19:42,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-07 17:19:42,442 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2019-12-07 17:19:42,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:19:42,442 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-07 17:19:42,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:19:42,442 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-07 17:19:42,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 17:19:42,444 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:19:42,444 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:19:42,444 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:19:42,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:19:42,445 INFO L82 PathProgramCache]: Analyzing trace with hash -881029229, now seen corresponding path program 1 times [2019-12-07 17:19:42,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:19:42,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592463372] [2019-12-07 17:19:42,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:19:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 17:19:42,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592463372] [2019-12-07 17:19:42,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709254888] [2019-12-07 17:19:42,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:19:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:42,544 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:19:42,548 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:19:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 17:19:42,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:19:42,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-12-07 17:19:42,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822090603] [2019-12-07 17:19:42,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:19:42,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:19:42,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:19:42,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:19:42,581 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2019-12-07 17:19:42,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:19:42,619 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-12-07 17:19:42,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:19:42,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-12-07 17:19:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:19:42,621 INFO L225 Difference]: With dead ends: 21 [2019-12-07 17:19:42,621 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 17:19:42,622 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:19:42,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 17:19:42,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 17:19:42,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 17:19:42,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-12-07 17:19:42,626 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2019-12-07 17:19:42,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:19:42,627 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-12-07 17:19:42,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:19:42,627 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-12-07 17:19:42,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 17:19:42,628 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:19:42,628 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:19:42,829 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:19:42,829 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:19:42,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:19:42,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1824240471, now seen corresponding path program 2 times [2019-12-07 17:19:42,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:19:42,831 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059521444] [2019-12-07 17:19:42,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:19:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 17:19:43,043 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059521444] [2019-12-07 17:19:43,043 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583540257] [2019-12-07 17:19:43,043 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:19:43,067 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:19:43,067 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:19:43,068 WARN L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 33 conjunts are in the unsatisfiable core [2019-12-07 17:19:43,070 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:19:43,231 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 17:19:43,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:19:43,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2019-12-07 17:19:43,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169145091] [2019-12-07 17:19:43,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-07 17:19:43,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:19:43,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-07 17:19:43,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2019-12-07 17:19:43,233 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 22 states. [2019-12-07 17:19:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:19:43,466 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-12-07 17:19:43,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 17:19:43,466 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2019-12-07 17:19:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:19:43,467 INFO L225 Difference]: With dead ends: 20 [2019-12-07 17:19:43,467 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 17:19:43,468 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2019-12-07 17:19:43,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 17:19:43,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 17:19:43,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 17:19:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 17:19:43,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-12-07 17:19:43,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:19:43,469 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:19:43,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-07 17:19:43,469 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:19:43,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 17:19:43,670 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:19:43,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 17:19:43,743 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 17:19:43,743 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 17:19:43,744 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 17:19:43,744 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2019-12-07 17:19:43,745 INFO L246 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2019-12-07 17:19:43,745 INFO L246 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2019-12-07 17:19:43,746 INFO L242 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= ULTIMATE.start_main_~a~0 2) [2019-12-07 17:19:43,746 INFO L246 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-12-07 17:19:43,746 INFO L246 CegarLoopResult]: For program point L11(lines 11 18) no Hoare annotation was computed. [2019-12-07 17:19:43,747 INFO L246 CegarLoopResult]: For program point sumEXIT(lines 3 9) no Hoare annotation was computed. [2019-12-07 17:19:43,747 INFO L242 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (and (= sum_~m |sum_#in~m|) (= sum_~n |sum_#in~n|) (<= 1 sum_~n)) [2019-12-07 17:19:43,748 INFO L246 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2019-12-07 17:19:43,748 INFO L246 CegarLoopResult]: For program point L4(lines 4 8) no Hoare annotation was computed. [2019-12-07 17:19:43,748 INFO L246 CegarLoopResult]: For program point sumFINAL(lines 3 9) no Hoare annotation was computed. [2019-12-07 17:19:43,749 INFO L249 CegarLoopResult]: At program point sumENTRY(lines 3 9) the Hoare annotation is: true [2019-12-07 17:19:43,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:19:43 BoogieIcfgContainer [2019-12-07 17:19:43,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:19:43,763 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:19:43,763 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:19:43,764 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:19:43,764 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:19:42" (3/4) ... [2019-12-07 17:19:43,769 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 17:19:43,776 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2019-12-07 17:19:43,780 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 17:19:43,780 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 17:19:43,808 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f88ee2b3-1ec0-4ffa-8c83-7dc1d6cb8680/bin/uautomizer/witness.graphml [2019-12-07 17:19:43,808 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:19:43,809 INFO L168 Benchmark]: Toolchain (without parser) took 2008.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 943.5 MB in the beginning and 910.8 MB in the end (delta: 32.8 MB). Peak memory consumption was 142.3 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:43,810 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:19:43,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -160.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:43,810 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.61 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 17:19:43,811 INFO L168 Benchmark]: Boogie Preprocessor took 9.92 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 17:19:43,811 INFO L168 Benchmark]: RCFGBuilder took 129.71 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:43,812 INFO L168 Benchmark]: TraceAbstraction took 1628.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 916.1 MB in the end (delta: 171.8 MB). Peak memory consumption was 171.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:43,812 INFO L168 Benchmark]: Witness Printer took 45.29 ms. Allocated memory is still 1.1 GB. Free memory was 916.1 MB in the beginning and 910.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:43,814 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -160.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.61 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 9.92 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 129.71 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1628.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 916.1 MB in the end (delta: 171.8 MB). Peak memory consumption was 171.8 MB. Max. memory is 11.5 GB. * Witness Printer took 45.29 ms. Allocated memory is still 1.1 GB. Free memory was 916.1 MB in the beginning and 910.8 MB 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: - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 37 SDslu, 95 SDs, 0 SdLazy, 209 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=2, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 14 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 6904 SizeOfPredicates, 11 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 21/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...