./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/array-multidimensional/max-2-u_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/max-2-u_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f9e1b66227ffe38f68241f1937a7ce2a9c68a56 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:25:07,606 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:25:07,608 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:25:07,622 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:25:07,623 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:25:07,623 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:25:07,625 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:25:07,627 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:25:07,628 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:25:07,629 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:25:07,630 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:25:07,630 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:25:07,631 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:25:07,632 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:25:07,633 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:25:07,634 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:25:07,635 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:25:07,637 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:25:07,639 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:25:07,640 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:25:07,642 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:25:07,643 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:25:07,645 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:25:07,646 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:25:07,646 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:25:07,647 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:25:07,648 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:25:07,649 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:25:07,650 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:25:07,651 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:25:07,652 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:25:07,652 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:25:07,653 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:25:07,653 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:25:07,655 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:25:07,655 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:25:07,656 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 20:25:07,669 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:25:07,670 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:25:07,670 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:25:07,671 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 20:25:07,671 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 20:25:07,671 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 20:25:07,671 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 20:25:07,671 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 20:25:07,672 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 20:25:07,672 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 20:25:07,672 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 20:25:07,673 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:25:07,673 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:25:07,673 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:25:07,673 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:25:07,675 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:25:07,675 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:25:07,675 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:25:07,676 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:25:07,676 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:25:07,676 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:25:07,676 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:25:07,676 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:25:07,676 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:25:07,677 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:25:07,677 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:25:07,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:25:07,677 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:25:07,677 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:25:07,678 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:25:07,678 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 20:25:07,678 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:25:07,678 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:25:07,678 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 20:25:07,678 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan 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 -> Taipan 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 -> 4f9e1b66227ffe38f68241f1937a7ce2a9c68a56 [2018-10-26 20:25:07,714 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:25:07,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:25:07,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:25:07,734 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:25:07,734 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:25:07,735 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/../../sv-benchmarks/c/array-multidimensional/max-2-u_true-unreach-call.i [2018-10-26 20:25:07,791 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/data/746897e46/75db1b1bfd014162b8bf245d9d2bfea5/FLAG6b5bd30fc [2018-10-26 20:25:08,153 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:25:08,154 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/sv-benchmarks/c/array-multidimensional/max-2-u_true-unreach-call.i [2018-10-26 20:25:08,163 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/data/746897e46/75db1b1bfd014162b8bf245d9d2bfea5/FLAG6b5bd30fc [2018-10-26 20:25:08,179 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/data/746897e46/75db1b1bfd014162b8bf245d9d2bfea5 [2018-10-26 20:25:08,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:25:08,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:25:08,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:25:08,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:25:08,190 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:25:08,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:25:08" (1/1) ... [2018-10-26 20:25:08,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6005f6f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:25:08, skipping insertion in model container [2018-10-26 20:25:08,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:25:08" (1/1) ... [2018-10-26 20:25:08,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:25:08,227 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:25:08,381 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:25:08,385 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:25:08,408 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:25:08,425 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:25:08,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:25:08 WrapperNode [2018-10-26 20:25:08,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:25:08,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:25:08,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:25:08,426 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:25:08,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:25:08" (1/1) ... [2018-10-26 20:25:08,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:25:08" (1/1) ... [2018-10-26 20:25:08,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:25:08,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:25:08,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:25:08,468 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:25:08,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:25:08" (1/1) ... [2018-10-26 20:25:08,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:25:08" (1/1) ... [2018-10-26 20:25:08,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:25:08" (1/1) ... [2018-10-26 20:25:08,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:25:08" (1/1) ... [2018-10-26 20:25:08,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:25:08" (1/1) ... [2018-10-26 20:25:08,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:25:08" (1/1) ... [2018-10-26 20:25:08,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:25:08" (1/1) ... [2018-10-26 20:25:08,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:25:08,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:25:08,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:25:08,499 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:25:08,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:25:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/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 [2018-10-26 20:25:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:25:08,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:25:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:25:08,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:25:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:25:08,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:25:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 20:25:08,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 20:25:09,205 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:25:09,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:25:09 BoogieIcfgContainer [2018-10-26 20:25:09,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:25:09,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:25:09,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:25:09,210 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:25:09,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:25:08" (1/3) ... [2018-10-26 20:25:09,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d8f686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:25:09, skipping insertion in model container [2018-10-26 20:25:09,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:25:08" (2/3) ... [2018-10-26 20:25:09,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d8f686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:25:09, skipping insertion in model container [2018-10-26 20:25:09,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:25:09" (3/3) ... [2018-10-26 20:25:09,216 INFO L112 eAbstractionObserver]: Analyzing ICFG max-2-u_true-unreach-call.i [2018-10-26 20:25:09,226 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:25:09,236 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:25:09,253 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:25:09,287 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:25:09,287 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:25:09,287 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:25:09,287 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:25:09,287 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:25:09,293 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:25:09,294 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:25:09,294 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:25:09,313 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-10-26 20:25:09,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-26 20:25:09,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:25:09,320 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:25:09,323 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:25:09,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:25:09,328 INFO L82 PathProgramCache]: Analyzing trace with hash -108950120, now seen corresponding path program 1 times [2018-10-26 20:25:09,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:25:09,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:25:09,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:25:09,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:25:09,375 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:25:09,407 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 20:25:09,407 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 20:25:09,407 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 20:25:09,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:25:09,431 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-26 20:25:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:25:09,474 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-10-26 20:25:09,476 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-26 20:25:09,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:25:09,477 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/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 [2018-10-26 20:25:09,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:25:09,490 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-26 20:25:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:25:09,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:25:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:25:09,558 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:25:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:25:09,611 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:25:09,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-10-26 20:25:09,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 20:25:09,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 20:25:09,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 20:25:09,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:25:09,633 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2018-10-26 20:25:09,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:25:09,659 INFO L93 Difference]: Finished difference Result 70 states and 97 transitions. [2018-10-26 20:25:09,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 20:25:09,661 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-10-26 20:25:09,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:25:09,668 INFO L225 Difference]: With dead ends: 70 [2018-10-26 20:25:09,668 INFO L226 Difference]: Without dead ends: 33 [2018-10-26 20:25:09,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:25:09,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-26 20:25:09,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-26 20:25:09,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-26 20:25:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-10-26 20:25:09,713 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 18 [2018-10-26 20:25:09,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:25:09,713 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-10-26 20:25:09,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 20:25:09,713 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-10-26 20:25:09,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 20:25:09,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:25:09,714 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:25:09,715 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:25:09,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:25:09,715 INFO L82 PathProgramCache]: Analyzing trace with hash -702412489, now seen corresponding path program 1 times [2018-10-26 20:25:09,715 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:25:09,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:25:09,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:25:09,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:25:09,717 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:25:09,724 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 20:25:09,724 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 20:25:09,724 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 20:25:09,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:25:09,742 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-26 20:25:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:25:09,809 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-10-26 20:25:09,810 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-26 20:25:09,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:25:09,810 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 20:25:09,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:25:09,826 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-26 20:25:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:25:09,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:25:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:25:09,967 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:25:10,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:25:10,081 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:25:10,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-10-26 20:25:10,082 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 20:25:10,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:25:10,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:25:10,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:25:10,083 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 3 states. [2018-10-26 20:25:10,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:25:10,202 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2018-10-26 20:25:10,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:25:10,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-10-26 20:25:10,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:25:10,204 INFO L225 Difference]: With dead ends: 60 [2018-10-26 20:25:10,204 INFO L226 Difference]: Without dead ends: 38 [2018-10-26 20:25:10,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:25:10,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-26 20:25:10,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-10-26 20:25:10,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-26 20:25:10,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2018-10-26 20:25:10,213 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 20 [2018-10-26 20:25:10,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:25:10,213 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2018-10-26 20:25:10,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:25:10,214 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2018-10-26 20:25:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-26 20:25:10,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:25:10,215 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:25:10,215 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:25:10,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:25:10,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1273708416, now seen corresponding path program 1 times [2018-10-26 20:25:10,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:25:10,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:25:10,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:25:10,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:25:10,217 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:25:10,225 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 20:25:10,225 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 20:25:10,226 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 20:25:10,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:25:10,242 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-26 20:25:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:25:10,297 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-10-26 20:25:10,299 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [15], [19], [23], [29], [33], [37], [41], [68], [72], [78], [82], [88], [100], [103], [105], [111], [112], [113], [115] [2018-10-26 20:25:10,354 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 20:25:10,355 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 20:25:10,571 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 20:25:10,572 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-26 20:25:10,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:25:10,586 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 20:25:10,721 INFO L227 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 77.62% of their original sizes. [2018-10-26 20:25:10,721 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 20:25:10,825 INFO L415 sIntCurrentIteration]: We unified 24 AI predicates to 24 [2018-10-26 20:25:10,825 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 20:25:10,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:25:10,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 20:25:10,826 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 20:25:10,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:25:10,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:25:10,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:25:10,827 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 4 states. [2018-10-26 20:25:10,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:25:10,915 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2018-10-26 20:25:10,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:25:10,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-10-26 20:25:10,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:25:10,916 INFO L225 Difference]: With dead ends: 37 [2018-10-26 20:25:10,916 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 20:25:10,916 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:25:10,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 20:25:10,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 20:25:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 20:25:10,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 20:25:10,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-10-26 20:25:10,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:25:10,920 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 20:25:10,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:25:10,920 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 20:25:10,920 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 20:25:10,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 20:25:11,079 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-10-26 20:25:11,776 WARN L179 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 27 [2018-10-26 20:25:12,022 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 28 [2018-10-26 20:25:12,025 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-26 20:25:12,025 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-26 20:25:12,025 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 20:25:12,025 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 20:25:12,025 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 20:25:12,025 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 20:25:12,025 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 20:25:12,025 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 62) no Hoare annotation was computed. [2018-10-26 20:25:12,026 INFO L421 ceAbstractionStarter]: At program point L56(line 56) the Hoare annotation is: false [2018-10-26 20:25:12,026 INFO L425 ceAbstractionStarter]: For program point L56-1(line 56) no Hoare annotation was computed. [2018-10-26 20:25:12,026 INFO L425 ceAbstractionStarter]: For program point L52-1(lines 52 60) no Hoare annotation was computed. [2018-10-26 20:25:12,026 INFO L421 ceAbstractionStarter]: At program point L52-3(lines 52 60) the Hoare annotation is: false [2018-10-26 20:25:12,026 INFO L425 ceAbstractionStarter]: For program point L52-4(lines 52 60) no Hoare annotation was computed. [2018-10-26 20:25:12,026 INFO L425 ceAbstractionStarter]: For program point L36-1(lines 36 45) no Hoare annotation was computed. [2018-10-26 20:25:12,026 INFO L421 ceAbstractionStarter]: At program point L36-3(lines 36 45) the Hoare annotation is: false [2018-10-26 20:25:12,027 INFO L425 ceAbstractionStarter]: For program point L36-4(lines 36 45) no Hoare annotation was computed. [2018-10-26 20:25:12,027 INFO L425 ceAbstractionStarter]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2018-10-26 20:25:12,027 INFO L421 ceAbstractionStarter]: At program point L24-3(lines 24 28) the Hoare annotation is: (and (<= (* 2 main_~m~0) 2000) (<= 3000 (* 2 main_~n~0)) (not (= |main_~#A~0.base| 0)) (<= (+ main_~j~0 main_~n~0) 1500) (<= (* 2 |main_~#A~0.offset|) 0) (<= 0 (+ main_~j~0 |main_~#A~0.offset|)) (<= 1000 (+ main_~i~0 main_~m~0)) (= main_~i~0 0)) [2018-10-26 20:25:12,027 INFO L425 ceAbstractionStarter]: For program point L24-4(lines 24 28) no Hoare annotation was computed. [2018-10-26 20:25:12,027 INFO L425 ceAbstractionStarter]: For program point L54-1(lines 54 58) no Hoare annotation was computed. [2018-10-26 20:25:12,027 INFO L421 ceAbstractionStarter]: At program point L54-3(lines 54 58) the Hoare annotation is: false [2018-10-26 20:25:12,027 INFO L425 ceAbstractionStarter]: For program point L54-4(lines 54 58) no Hoare annotation was computed. [2018-10-26 20:25:12,028 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 11 62) no Hoare annotation was computed. [2018-10-26 20:25:12,028 INFO L425 ceAbstractionStarter]: For program point L38-1(lines 38 43) no Hoare annotation was computed. [2018-10-26 20:25:12,028 INFO L421 ceAbstractionStarter]: At program point L38-3(lines 38 43) the Hoare annotation is: false [2018-10-26 20:25:12,028 INFO L425 ceAbstractionStarter]: For program point L38-4(lines 38 43) no Hoare annotation was computed. [2018-10-26 20:25:12,028 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 62) the Hoare annotation is: true [2018-10-26 20:25:12,028 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 30) no Hoare annotation was computed. [2018-10-26 20:25:12,028 INFO L421 ceAbstractionStarter]: At program point L22-3(lines 22 30) the Hoare annotation is: (and (<= (* 2 main_~m~0) 2000) (<= 3000 (* 2 main_~n~0)) (not (= |main_~#A~0.base| 0)) (<= (+ main_~j~0 main_~n~0) 1500) (<= (* 2 |main_~#A~0.offset|) 0) (<= 0 (+ main_~j~0 |main_~#A~0.offset|)) (<= 1000 main_~m~0) (= main_~i~0 0)) [2018-10-26 20:25:12,029 INFO L425 ceAbstractionStarter]: For program point L22-4(lines 22 30) no Hoare annotation was computed. [2018-10-26 20:25:12,029 INFO L425 ceAbstractionStarter]: For program point L39(lines 39 41) no Hoare annotation was computed. [2018-10-26 20:25:12,029 INFO L425 ceAbstractionStarter]: For program point L39-2(lines 39 41) no Hoare annotation was computed. [2018-10-26 20:25:12,029 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-26 20:25:12,029 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-26 20:25:12,029 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-26 20:25:12,030 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-26 20:25:12,030 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-26 20:25:12,030 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-26 20:25:12,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:25:12 BoogieIcfgContainer [2018-10-26 20:25:12,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:25:12,045 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:25:12,045 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:25:12,046 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:25:12,047 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:25:09" (3/4) ... [2018-10-26 20:25:12,052 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 20:25:12,058 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 20:25:12,059 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 20:25:12,059 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-26 20:25:12,064 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2018-10-26 20:25:12,065 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2018-10-26 20:25:12,065 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-26 20:25:12,137 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f496f668-0579-4021-afe9-559c1820e9c4/bin-2019/utaipan/witness.graphml [2018-10-26 20:25:12,138 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:25:12,139 INFO L168 Benchmark]: Toolchain (without parser) took 3955.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 959.1 MB in the beginning and 937.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 192.4 MB. Max. memory is 11.5 GB. [2018-10-26 20:25:12,140 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:25:12,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.52 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:25:12,141 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.94 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:25:12,141 INFO L168 Benchmark]: Boogie Preprocessor took 30.52 ms. Allocated memory is still 1.0 GB. Free memory is still 940.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:25:12,144 INFO L168 Benchmark]: RCFGBuilder took 707.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -203.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2018-10-26 20:25:12,145 INFO L168 Benchmark]: TraceAbstraction took 2837.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 940.6 MB in the end (delta: 203.6 MB). Peak memory consumption was 203.6 MB. Max. memory is 11.5 GB. [2018-10-26 20:25:12,149 INFO L168 Benchmark]: Witness Printer took 93.19 ms. Allocated memory is still 1.2 GB. Free memory was 940.6 MB in the beginning and 937.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-10-26 20:25:12,151 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 240.52 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.94 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.52 ms. Allocated memory is still 1.0 GB. Free memory is still 940.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 707.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -203.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2837.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 940.6 MB in the end (delta: 203.6 MB). Peak memory consumption was 203.6 MB. Max. memory is 11.5 GB. * Witness Printer took 93.19 ms. Allocated memory is still 1.2 GB. Free memory was 940.6 MB in the beginning and 937.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 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: 36]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((((2 * m <= 2000 && 3000 <= 2 * n) && !(A == 0)) && j + n <= 1500) && 2 * A <= 0) && 0 <= j + A) && 1000 <= m) && i == 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((((2 * m <= 2000 && 3000 <= 2 * n) && !(A == 0)) && j + n <= 1500) && 2 * A <= 0) && 0 <= j + A) && 1000 <= i + m) && i == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 locations, 1 error locations. SAFE Result, 2.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 1.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 88 SDtfs, 6 SDslu, 34 SDs, 0 SdLazy, 17 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9723214285714287 AbsIntWeakeningRatio, 1.375 AbsIntAvgWeakeningVarsNumRemoved, 45.625 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 14 PreInvPairs, 16 NumberOfFragments, 84 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 442 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 1604 SizeOfPredicates, 2 NumberOfNonLiveVariables, 192 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...