./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/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 cc52fae450c71cb08003ff68124573964734a280 ..................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 12:04:30,612 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:04:30,613 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:04:30,621 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:04:30,622 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:04:30,622 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:04:30,623 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:04:30,624 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:04:30,626 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:04:30,626 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:04:30,627 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:04:30,627 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:04:30,628 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:04:30,628 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:04:30,629 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:04:30,630 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:04:30,630 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:04:30,631 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:04:30,633 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:04:30,634 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:04:30,635 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:04:30,635 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:04:30,637 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:04:30,637 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:04:30,637 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:04:30,638 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:04:30,639 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:04:30,639 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:04:30,640 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:04:30,641 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:04:30,641 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:04:30,641 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:04:30,642 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:04:30,642 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:04:30,642 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:04:30,643 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:04:30,643 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 12:04:30,654 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:04:30,654 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:04:30,654 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 12:04:30,654 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 12:04:30,655 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:04:30,655 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:04:30,655 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:04:30,655 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:04:30,655 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 12:04:30,656 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:04:30,656 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 12:04:30,656 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:04:30,656 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 12:04:30,656 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 12:04:30,656 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 12:04:30,656 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 12:04:30,656 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 12:04:30,657 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:04:30,657 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 12:04:30,657 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:04:30,657 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:04:30,657 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 12:04:30,657 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 12:04:30,658 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:04:30,658 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:04:30,658 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 12:04:30,658 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 12:04:30,658 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 12:04:30,658 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 12:04:30,658 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 12:04:30,658 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/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 -> cc52fae450c71cb08003ff68124573964734a280 [2018-11-28 12:04:30,680 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:04:30,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:04:30,690 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:04:30,691 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:04:30,691 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:04:30,691 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/uautomizer/../../sv-benchmarks/c/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i [2018-11-28 12:04:30,727 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/uautomizer/data/8aa816438/d32c3b29d8b546f4ac26b85d6fb74e25/FLAG1a7505fcc [2018-11-28 12:04:31,077 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:04:31,078 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/sv-benchmarks/c/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i [2018-11-28 12:04:31,082 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/uautomizer/data/8aa816438/d32c3b29d8b546f4ac26b85d6fb74e25/FLAG1a7505fcc [2018-11-28 12:04:31,497 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/uautomizer/data/8aa816438/d32c3b29d8b546f4ac26b85d6fb74e25 [2018-11-28 12:04:31,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:04:31,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 12:04:31,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:04:31,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:04:31,505 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:04:31,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:04:31" (1/1) ... [2018-11-28 12:04:31,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aae181c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:31, skipping insertion in model container [2018-11-28 12:04:31,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:04:31" (1/1) ... [2018-11-28 12:04:31,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:04:31,522 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:04:31,616 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:04:31,619 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:04:31,629 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:04:31,637 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:04:31,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:31 WrapperNode [2018-11-28 12:04:31,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:04:31,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 12:04:31,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 12:04:31,638 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 12:04:31,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:31" (1/1) ... [2018-11-28 12:04:31,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:31" (1/1) ... [2018-11-28 12:04:31,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 12:04:31,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:04:31,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:04:31,649 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:04:31,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:31" (1/1) ... [2018-11-28 12:04:31,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:31" (1/1) ... [2018-11-28 12:04:31,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:31" (1/1) ... [2018-11-28 12:04:31,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:31" (1/1) ... [2018-11-28 12:04:31,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:31" (1/1) ... [2018-11-28 12:04:31,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:31" (1/1) ... [2018-11-28 12:04:31,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:31" (1/1) ... [2018-11-28 12:04:31,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:04:31,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:04:31,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:04:31,662 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:04:31,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/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 [2018-11-28 12:04:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 12:04:31,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 12:04:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:04:31,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:04:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 12:04:31,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 12:04:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 12:04:31,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 12:04:31,824 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:04:31,824 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 12:04:31,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:04:31 BoogieIcfgContainer [2018-11-28 12:04:31,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:04:31,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 12:04:31,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 12:04:31,827 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 12:04:31,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:04:31" (1/3) ... [2018-11-28 12:04:31,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c7dd71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:04:31, skipping insertion in model container [2018-11-28 12:04:31,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:31" (2/3) ... [2018-11-28 12:04:31,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c7dd71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:04:31, skipping insertion in model container [2018-11-28 12:04:31,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:04:31" (3/3) ... [2018-11-28 12:04:31,829 INFO L112 eAbstractionObserver]: Analyzing ICFG bhmr2007_true-unreach-call_true-termination.c.i [2018-11-28 12:04:31,835 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 12:04:31,839 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 12:04:31,848 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 12:04:31,865 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:04:31,866 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 12:04:31,866 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 12:04:31,866 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 12:04:31,866 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:04:31,866 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:04:31,866 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 12:04:31,866 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:04:31,866 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 12:04:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-28 12:04:31,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 12:04:31,885 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:04:31,886 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:04:31,887 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:04:31,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:04:31,891 INFO L82 PathProgramCache]: Analyzing trace with hash 439143249, now seen corresponding path program 1 times [2018-11-28 12:04:31,892 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:04:31,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:04:31,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:04:31,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:04:31,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:04:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:04:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:04:31,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:04:31,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:04:31,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 12:04:31,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 12:04:31,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 12:04:31,977 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-28 12:04:31,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:04:31,990 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-11-28 12:04:31,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 12:04:31,992 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-28 12:04:31,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:04:32,000 INFO L225 Difference]: With dead ends: 33 [2018-11-28 12:04:32,001 INFO L226 Difference]: Without dead ends: 14 [2018-11-28 12:04:32,003 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 12:04:32,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-28 12:04:32,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-28 12:04:32,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 12:04:32,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-11-28 12:04:32,025 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2018-11-28 12:04:32,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:04:32,026 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-28 12:04:32,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 12:04:32,026 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-28 12:04:32,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 12:04:32,026 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:04:32,026 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:04:32,026 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:04:32,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:04:32,027 INFO L82 PathProgramCache]: Analyzing trace with hash 428984518, now seen corresponding path program 1 times [2018-11-28 12:04:32,027 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:04:32,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:04:32,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:04:32,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:04:32,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:04:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:04:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:04:32,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:04:32,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 12:04:32,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 12:04:32,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 12:04:32,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-28 12:04:32,180 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2018-11-28 12:04:32,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:04:32,244 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-11-28 12:04:32,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 12:04:32,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-11-28 12:04:32,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:04:32,246 INFO L225 Difference]: With dead ends: 21 [2018-11-28 12:04:32,246 INFO L226 Difference]: Without dead ends: 16 [2018-11-28 12:04:32,247 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:04:32,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-28 12:04:32,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-11-28 12:04:32,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 12:04:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-11-28 12:04:32,251 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2018-11-28 12:04:32,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:04:32,251 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-11-28 12:04:32,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 12:04:32,251 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-11-28 12:04:32,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 12:04:32,251 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:04:32,251 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:04:32,252 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:04:32,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:04:32,252 INFO L82 PathProgramCache]: Analyzing trace with hash -277157879, now seen corresponding path program 1 times [2018-11-28 12:04:32,252 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:04:32,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:04:32,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:04:32,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:04:32,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:04:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:04:32,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:04:32,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:04:32,408 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:04:32,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:04:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:04:32,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:04:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:04:32,607 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:04:32,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-11-28 12:04:32,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 12:04:32,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 12:04:32,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-28 12:04:32,609 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 14 states. [2018-11-28 12:04:32,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:04:32,793 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2018-11-28 12:04:32,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 12:04:32,793 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-11-28 12:04:32,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:04:32,794 INFO L225 Difference]: With dead ends: 28 [2018-11-28 12:04:32,794 INFO L226 Difference]: Without dead ends: 22 [2018-11-28 12:04:32,794 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2018-11-28 12:04:32,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-28 12:04:32,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-11-28 12:04:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-28 12:04:32,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-11-28 12:04:32,797 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 14 [2018-11-28 12:04:32,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:04:32,797 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-11-28 12:04:32,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 12:04:32,797 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2018-11-28 12:04:32,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 12:04:32,797 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:04:32,797 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:04:32,798 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:04:32,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:04:32,798 INFO L82 PathProgramCache]: Analyzing trace with hash -608518108, now seen corresponding path program 1 times [2018-11-28 12:04:32,798 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:04:32,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:04:32,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:04:32,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:04:32,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:04:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:04:32,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 12:04:32,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:04:32,919 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:04:32,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:04:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:04:32,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:04:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:04:33,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:04:33,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2018-11-28 12:04:33,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-28 12:04:33,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 12:04:33,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2018-11-28 12:04:33,085 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 17 states. [2018-11-28 12:04:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:04:33,322 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2018-11-28 12:04:33,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-28 12:04:33,322 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-11-28 12:04:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:04:33,323 INFO L225 Difference]: With dead ends: 28 [2018-11-28 12:04:33,323 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 12:04:33,324 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2018-11-28 12:04:33,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 12:04:33,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 12:04:33,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 12:04:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 12:04:33,325 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-11-28 12:04:33,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:04:33,325 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:04:33,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-28 12:04:33,325 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 12:04:33,325 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 12:04:33,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 12:04:33,406 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 12:04:33,407 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 12:04:33,407 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 12:04:33,407 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 12:04:33,407 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 12:04:33,407 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 12:04:33,407 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 26) the Hoare annotation is: true [2018-11-28 12:04:33,407 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 26) no Hoare annotation was computed. [2018-11-28 12:04:33,407 INFO L448 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-28 12:04:33,408 INFO L448 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2018-11-28 12:04:33,408 INFO L448 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-11-28 12:04:33,408 INFO L448 ceAbstractionStarter]: For program point L15-2(lines 15 21) no Hoare annotation was computed. [2018-11-28 12:04:33,408 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 26) no Hoare annotation was computed. [2018-11-28 12:04:33,408 INFO L444 ceAbstractionStarter]: At program point L14-2(lines 14 23) the Hoare annotation is: (let ((.cse1 (* 3 main_~i~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse0 (* 3 main_~n~0)))) [2018-11-28 12:04:33,408 INFO L444 ceAbstractionStarter]: At program point L14-3(lines 14 23) the Hoare annotation is: (let ((.cse1 (* 3 main_~n~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-11-28 12:04:33,409 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-28 12:04:33,409 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-28 12:04:33,409 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-28 12:04:33,409 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-28 12:04:33,409 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-28 12:04:33,409 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-28 12:04:33,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:04:33 BoogieIcfgContainer [2018-11-28 12:04:33,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 12:04:33,418 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:04:33,418 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:04:33,419 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:04:33,419 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:04:31" (3/4) ... [2018-11-28 12:04:33,422 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 12:04:33,426 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 12:04:33,427 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 12:04:33,427 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-28 12:04:33,430 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-28 12:04:33,430 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 12:04:33,431 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 12:04:33,431 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 12:04:33,460 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2d09c1f2-facb-4022-818e-effece26ad5b/bin-2019/uautomizer/witness.graphml [2018-11-28 12:04:33,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:04:33,461 INFO L168 Benchmark]: Toolchain (without parser) took 1961.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 953.3 MB in the beginning and 869.6 MB in the end (delta: 83.8 MB). Peak memory consumption was 208.0 MB. Max. memory is 11.5 GB. [2018-11-28 12:04:33,462 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:04:33,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.63 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-28 12:04:33,463 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.41 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:04:33,463 INFO L168 Benchmark]: Boogie Preprocessor took 13.01 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:04:33,463 INFO L168 Benchmark]: RCFGBuilder took 162.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -165.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-11-28 12:04:33,464 INFO L168 Benchmark]: TraceAbstraction took 1593.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 872.2 MB in the end (delta: 235.7 MB). Peak memory consumption was 235.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:04:33,464 INFO L168 Benchmark]: Witness Printer took 42.30 ms. Allocated memory is still 1.2 GB. Free memory was 872.2 MB in the beginning and 869.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:04:33,466 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 135.63 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.41 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.01 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 162.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -165.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1593.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 872.2 MB in the end (delta: 235.7 MB). Peak memory consumption was 235.7 MB. Max. memory is 11.5 GB. * Witness Printer took 42.30 ms. Allocated memory is still 1.2 GB. Free memory was 872.2 MB in the beginning and 869.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 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: 14]: Loop Invariant Derived loop invariant: (a + b <= 3 * i && 3 * i <= a + b) && a + b <= 3 * n - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 48 SDtfs, 23 SDslu, 128 SDs, 0 SdLazy, 256 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 21 NumberOfFragments, 42 HoareAnnotationTreeSize, 12 FomulaSimplifications, 97 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 145 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 8051 SizeOfPredicates, 6 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...