./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/terminator_03-2.i --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_1ce8b6b5-6081-442d-9c8c-7d6cb060af50/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1ce8b6b5-6081-442d-9c8c-7d6cb060af50/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1ce8b6b5-6081-442d-9c8c-7d6cb060af50/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1ce8b6b5-6081-442d-9c8c-7d6cb060af50/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/terminator_03-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1ce8b6b5-6081-442d-9c8c-7d6cb060af50/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1ce8b6b5-6081-442d-9c8c-7d6cb060af50/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 a269e8b2c2a55ee83f0497e8cbfb0a6499d0714f ......................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:53:20,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:53:20,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:53:20,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:53:20,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:53:20,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:53:20,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:53:20,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:53:20,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:53:20,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:53:20,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:53:20,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:53:20,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:53:20,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:53:20,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:53:20,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:53:20,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:53:20,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:53:20,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:53:20,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:53:20,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:53:20,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:53:20,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:53:20,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:53:20,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:53:20,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:53:20,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:53:20,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:53:20,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:53:20,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:53:20,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:53:20,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:53:20,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:53:20,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:53:20,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:53:20,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:53:20,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:53:20,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:53:20,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:53:20,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:53:20,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:53:20,443 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1ce8b6b5-6081-442d-9c8c-7d6cb060af50/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:53:20,457 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:53:20,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:53:20,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:53:20,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:53:20,459 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:53:20,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:53:20,459 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:53:20,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:53:20,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:53:20,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:53:20,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:53:20,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:53:20,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:53:20,461 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:53:20,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:53:20,461 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:53:20,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:53:20,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:53:20,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:53:20,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:53:20,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:53:20,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:53:20,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:53:20,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:53:20,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:53:20,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:53:20,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:53:20,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:53:20,464 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_1ce8b6b5-6081-442d-9c8c-7d6cb060af50/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 -> a269e8b2c2a55ee83f0497e8cbfb0a6499d0714f [2019-11-15 23:53:20,496 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:53:20,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:53:20,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:53:20,512 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:53:20,512 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:53:20,513 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1ce8b6b5-6081-442d-9c8c-7d6cb060af50/bin/uautomizer/../../sv-benchmarks/c/loops/terminator_03-2.i [2019-11-15 23:53:20,574 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1ce8b6b5-6081-442d-9c8c-7d6cb060af50/bin/uautomizer/data/423b4aaad/5a6bd7395dd548bb837362993bb8b1ea/FLAG8ff174470 [2019-11-15 23:53:20,936 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:53:20,937 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1ce8b6b5-6081-442d-9c8c-7d6cb060af50/sv-benchmarks/c/loops/terminator_03-2.i [2019-11-15 23:53:20,943 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1ce8b6b5-6081-442d-9c8c-7d6cb060af50/bin/uautomizer/data/423b4aaad/5a6bd7395dd548bb837362993bb8b1ea/FLAG8ff174470 [2019-11-15 23:53:20,962 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1ce8b6b5-6081-442d-9c8c-7d6cb060af50/bin/uautomizer/data/423b4aaad/5a6bd7395dd548bb837362993bb8b1ea [2019-11-15 23:53:20,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:53:20,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:53:20,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:53:20,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:53:20,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:53:20,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:53:20" (1/1) ... [2019-11-15 23:53:20,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@146b7a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:20, skipping insertion in model container [2019-11-15 23:53:20,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:53:20" (1/1) ... [2019-11-15 23:53:20,987 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:53:21,003 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:53:21,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:53:21,248 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:53:21,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:53:21,278 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:53:21,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:21 WrapperNode [2019-11-15 23:53:21,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:53:21,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:53:21,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:53:21,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:53:21,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:21" (1/1) ... [2019-11-15 23:53:21,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:21" (1/1) ... [2019-11-15 23:53:21,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:53:21,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:53:21,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:53:21,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:53:21,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:21" (1/1) ... [2019-11-15 23:53:21,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:21" (1/1) ... [2019-11-15 23:53:21,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:21" (1/1) ... [2019-11-15 23:53:21,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:21" (1/1) ... [2019-11-15 23:53:21,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:21" (1/1) ... [2019-11-15 23:53:21,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:21" (1/1) ... [2019-11-15 23:53:21,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:21" (1/1) ... [2019-11-15 23:53:21,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:53:21,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:53:21,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:53:21,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:53:21,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ce8b6b5-6081-442d-9c8c-7d6cb060af50/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 23:53:21,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:53:21,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:53:21,509 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:53:21,509 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 23:53:21,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:53:21 BoogieIcfgContainer [2019-11-15 23:53:21,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:53:21,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:53:21,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:53:21,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:53:21,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:53:20" (1/3) ... [2019-11-15 23:53:21,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685b2f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:53:21, skipping insertion in model container [2019-11-15 23:53:21,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:53:21" (2/3) ... [2019-11-15 23:53:21,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685b2f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:53:21, skipping insertion in model container [2019-11-15 23:53:21,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:53:21" (3/3) ... [2019-11-15 23:53:21,517 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_03-2.i [2019-11-15 23:53:21,524 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:53:21,529 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:53:21,538 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:53:21,555 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:53:21,555 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:53:21,556 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:53:21,556 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:53:21,556 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:53:21,556 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:53:21,556 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:53:21,556 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:53:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-15 23:53:21,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 23:53:21,572 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:53:21,573 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 23:53:21,574 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:53:21,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:53:21,579 INFO L82 PathProgramCache]: Analyzing trace with hash 922384074, now seen corresponding path program 1 times [2019-11-15 23:53:21,587 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:53:21,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981524008] [2019-11-15 23:53:21,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:53:21,588 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:53:21,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:53:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:53:21,721 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 23:53:21,722 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981524008] [2019-11-15 23:53:21,723 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:53:21,723 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:53:21,723 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727041974] [2019-11-15 23:53:21,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:53:21,727 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:53:21,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:53:21,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:53:21,747 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2019-11-15 23:53:21,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:53:21,825 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-11-15 23:53:21,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:53:21,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-15 23:53:21,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:53:21,835 INFO L225 Difference]: With dead ends: 29 [2019-11-15 23:53:21,835 INFO L226 Difference]: Without dead ends: 8 [2019-11-15 23:53:21,837 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:53:21,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-15 23:53:21,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-15 23:53:21,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-15 23:53:21,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-15 23:53:21,864 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-15 23:53:21,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:53:21,864 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-15 23:53:21,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:53:21,865 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-15 23:53:21,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-15 23:53:21,865 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:53:21,866 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:53:21,866 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:53:21,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:53:21,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1484065106, now seen corresponding path program 1 times [2019-11-15 23:53:21,867 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:53:21,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915790677] [2019-11-15 23:53:21,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:53:21,868 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:53:21,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:53:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:53:21,934 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 23:53:21,935 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915790677] [2019-11-15 23:53:21,935 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:53:21,935 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 23:53:21,936 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441115948] [2019-11-15 23:53:21,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:53:21,937 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:53:21,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:53:21,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:53:21,938 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2019-11-15 23:53:21,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:53:21,971 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-11-15 23:53:21,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:53:21,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-15 23:53:21,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:53:21,971 INFO L225 Difference]: With dead ends: 8 [2019-11-15 23:53:21,972 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 23:53:21,972 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:53:21,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 23:53:21,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 23:53:21,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 23:53:21,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 23:53:21,973 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-15 23:53:21,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:53:21,973 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:53:21,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:53:21,973 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:53:21,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 23:53:21,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 23:53:21,991 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 23:53:21,991 INFO L446 ceAbstractionStarter]: At program point L21(lines 11 22) the Hoare annotation is: true [2019-11-15 23:53:21,992 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 19) no Hoare annotation was computed. [2019-11-15 23:53:21,992 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-15 23:53:21,992 INFO L443 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2019-11-15 23:53:21,992 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-15 23:53:21,992 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 23:53:21,992 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 23:53:21,992 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-15 23:53:21,993 INFO L439 ceAbstractionStarter]: At program point L16-2(lines 16 18) the Hoare annotation is: (< 0 ULTIMATE.start_main_~y~0) [2019-11-15 23:53:21,993 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-15 23:53:21,993 INFO L439 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2019-11-15 23:53:22,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:53:22 BoogieIcfgContainer [2019-11-15 23:53:22,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:53:22,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:53:22,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:53:22,004 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:53:22,004 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:53:21" (3/4) ... [2019-11-15 23:53:22,007 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 23:53:22,016 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-15 23:53:22,017 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 23:53:22,051 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1ce8b6b5-6081-442d-9c8c-7d6cb060af50/bin/uautomizer/witness.graphml [2019-11-15 23:53:22,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:53:22,054 INFO L168 Benchmark]: Toolchain (without parser) took 1086.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -130.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:53:22,054 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:53:22,055 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -186.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:53:22,055 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.07 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 23:53:22,055 INFO L168 Benchmark]: Boogie Preprocessor took 16.80 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 23:53:22,056 INFO L168 Benchmark]: RCFGBuilder took 185.67 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:53:22,056 INFO L168 Benchmark]: TraceAbstraction took 492.03 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:53:22,057 INFO L168 Benchmark]: Witness Printer took 48.10 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:53:22,059 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 308.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -186.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.07 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 16.80 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 185.67 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 492.03 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Witness Printer took 48.10 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: 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: 5]: 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 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 < y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 16 SDslu, 23 SDs, 0 SdLazy, 17 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 3 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 152 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 correct! Received shutdown request...