./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-invgen/down_true-unreach-call_true-termination.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_dca14d87-fdbf-4fbb-9fdc-65740d66a1e7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_dca14d87-fdbf-4fbb-9fdc-65740d66a1e7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_dca14d87-fdbf-4fbb-9fdc-65740d66a1e7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_dca14d87-fdbf-4fbb-9fdc-65740d66a1e7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/down_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_dca14d87-fdbf-4fbb-9fdc-65740d66a1e7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_dca14d87-fdbf-4fbb-9fdc-65740d66a1e7/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 52aef301dacdb8760f69e679392209c245be6469 .......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 12:32:40,177 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 12:32:40,179 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 12:32:40,186 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 12:32:40,186 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 12:32:40,187 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 12:32:40,188 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 12:32:40,189 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 12:32:40,190 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 12:32:40,191 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 12:32:40,192 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 12:32:40,192 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 12:32:40,193 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 12:32:40,193 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 12:32:40,194 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 12:32:40,195 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 12:32:40,195 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 12:32:40,197 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 12:32:40,199 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 12:32:40,200 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 12:32:40,201 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 12:32:40,202 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 12:32:40,203 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 12:32:40,204 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 12:32:40,204 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 12:32:40,204 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 12:32:40,205 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 12:32:40,206 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 12:32:40,206 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 12:32:40,207 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 12:32:40,207 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 12:32:40,207 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 12:32:40,208 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 12:32:40,208 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 12:32:40,208 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 12:32:40,209 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 12:32:40,209 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_dca14d87-fdbf-4fbb-9fdc-65740d66a1e7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 12:32:40,216 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 12:32:40,216 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 12:32:40,216 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 12:32:40,216 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 12:32:40,217 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 12:32:40,217 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 12:32:40,217 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 12:32:40,217 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 12:32:40,217 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 12:32:40,217 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 12:32:40,217 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 12:32:40,218 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 12:32:40,218 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 12:32:40,218 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 12:32:40,218 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 12:32:40,218 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 12:32:40,218 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 12:32:40,218 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 12:32:40,218 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 12:32:40,219 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 12:32:40,219 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 12:32:40,219 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 12:32:40,219 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 12:32:40,219 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 12:32:40,219 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 12:32:40,219 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 12:32:40,219 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 12:32:40,220 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 12:32:40,220 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 12:32:40,220 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 12:32:40,220 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 12:32:40,220 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 12:32:40,220 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 12:32:40,220 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 12:32:40,220 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_dca14d87-fdbf-4fbb-9fdc-65740d66a1e7/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 -> 52aef301dacdb8760f69e679392209c245be6469 [2018-11-10 12:32:40,241 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 12:32:40,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 12:32:40,252 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 12:32:40,253 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 12:32:40,253 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 12:32:40,253 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_dca14d87-fdbf-4fbb-9fdc-65740d66a1e7/bin-2019/utaipan/../../sv-benchmarks/c/loop-invgen/down_true-unreach-call_true-termination.i [2018-11-10 12:32:40,289 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dca14d87-fdbf-4fbb-9fdc-65740d66a1e7/bin-2019/utaipan/data/7ad18390c/32c6a99c557a4b4193ed91dda3d06bde/FLAG38c7cd3aa [2018-11-10 12:32:40,674 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 12:32:40,675 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_dca14d87-fdbf-4fbb-9fdc-65740d66a1e7/sv-benchmarks/c/loop-invgen/down_true-unreach-call_true-termination.i [2018-11-10 12:32:40,679 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dca14d87-fdbf-4fbb-9fdc-65740d66a1e7/bin-2019/utaipan/data/7ad18390c/32c6a99c557a4b4193ed91dda3d06bde/FLAG38c7cd3aa [2018-11-10 12:32:40,688 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_dca14d87-fdbf-4fbb-9fdc-65740d66a1e7/bin-2019/utaipan/data/7ad18390c/32c6a99c557a4b4193ed91dda3d06bde [2018-11-10 12:32:40,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 12:32:40,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 12:32:40,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 12:32:40,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 12:32:40,693 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 12:32:40,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:32:40" (1/1) ... [2018-11-10 12:32:40,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f62aa95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:32:40, skipping insertion in model container [2018-11-10 12:32:40,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:32:40" (1/1) ... [2018-11-10 12:32:40,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 12:32:40,713 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 12:32:40,809 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:32:40,811 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 12:32:40,820 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:32:40,828 INFO L193 MainTranslator]: Completed translation [2018-11-10 12:32:40,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:32:40 WrapperNode [2018-11-10 12:32:40,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 12:32:40,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 12:32:40,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 12:32:40,829 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 12:32:40,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:32:40" (1/1) ... [2018-11-10 12:32:40,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:32:40" (1/1) ... [2018-11-10 12:32:40,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 12:32:40,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 12:32:40,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 12:32:40,840 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 12:32:40,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:32:40" (1/1) ... [2018-11-10 12:32:40,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:32:40" (1/1) ... [2018-11-10 12:32:40,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:32:40" (1/1) ... [2018-11-10 12:32:40,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:32:40" (1/1) ... [2018-11-10 12:32:40,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:32:40" (1/1) ... [2018-11-10 12:32:40,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:32:40" (1/1) ... [2018-11-10 12:32:40,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:32:40" (1/1) ... [2018-11-10 12:32:40,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 12:32:40,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 12:32:40,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 12:32:40,854 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 12:32:40,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:32:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dca14d87-fdbf-4fbb-9fdc-65740d66a1e7/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 [2018-11-10 12:32:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 12:32:40,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 12:32:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 12:32:40,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 12:32:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 12:32:40,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 12:32:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 12:32:40,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 12:32:41,056 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 12:32:41,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:32:41 BoogieIcfgContainer [2018-11-10 12:32:41,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 12:32:41,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 12:32:41,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 12:32:41,060 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 12:32:41,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:32:40" (1/3) ... [2018-11-10 12:32:41,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed7621b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:32:41, skipping insertion in model container [2018-11-10 12:32:41,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:32:40" (2/3) ... [2018-11-10 12:32:41,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed7621b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:32:41, skipping insertion in model container [2018-11-10 12:32:41,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:32:41" (3/3) ... [2018-11-10 12:32:41,064 INFO L112 eAbstractionObserver]: Analyzing ICFG down_true-unreach-call_true-termination.i [2018-11-10 12:32:41,072 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 12:32:41,078 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 12:32:41,091 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 12:32:41,118 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 12:32:41,118 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 12:32:41,118 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 12:32:41,118 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 12:32:41,118 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 12:32:41,119 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 12:32:41,119 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 12:32:41,119 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 12:32:41,133 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-10 12:32:41,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 12:32:41,138 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:32:41,139 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:32:41,140 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:32:41,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:32:41,145 INFO L82 PathProgramCache]: Analyzing trace with hash 123585964, now seen corresponding path program 1 times [2018-11-10 12:32:41,147 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 12:32:41,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:32:41,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:32:41,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:32:41,187 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 12:32:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:32:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:32:41,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:32:41,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 12:32:41,227 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 12:32:41,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 12:32:41,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 12:32:41,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 12:32:41,240 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2018-11-10 12:32:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:32:41,254 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2018-11-10 12:32:41,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 12:32:41,255 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-11-10 12:32:41,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:32:41,262 INFO L225 Difference]: With dead ends: 39 [2018-11-10 12:32:41,262 INFO L226 Difference]: Without dead ends: 18 [2018-11-10 12:32:41,265 INFO L605 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 [2018-11-10 12:32:41,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-10 12:32:41,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-10 12:32:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 12:32:41,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-11-10 12:32:41,298 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2018-11-10 12:32:41,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:32:41,298 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-11-10 12:32:41,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 12:32:41,298 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-11-10 12:32:41,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 12:32:41,299 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:32:41,299 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:32:41,299 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:32:41,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:32:41,300 INFO L82 PathProgramCache]: Analyzing trace with hash -203615370, now seen corresponding path program 1 times [2018-11-10 12:32:41,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 12:32:41,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:32:41,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:32:41,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:32:41,301 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 12:32:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:32:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:32:41,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:32:41,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 12:32:41,359 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 12:32:41,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 12:32:41,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 12:32:41,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 12:32:41,361 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2018-11-10 12:32:41,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:32:41,417 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-11-10 12:32:41,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 12:32:41,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-10 12:32:41,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:32:41,419 INFO L225 Difference]: With dead ends: 33 [2018-11-10 12:32:41,419 INFO L226 Difference]: Without dead ends: 20 [2018-11-10 12:32:41,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-10 12:32:41,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-10 12:32:41,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-10 12:32:41,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-10 12:32:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-11-10 12:32:41,422 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2018-11-10 12:32:41,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:32:41,422 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-11-10 12:32:41,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 12:32:41,422 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-11-10 12:32:41,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 12:32:41,423 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:32:41,423 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:32:41,423 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:32:41,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:32:41,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1025157488, now seen corresponding path program 1 times [2018-11-10 12:32:41,424 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 12:32:41,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:32:41,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:32:41,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:32:41,425 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 12:32:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:32:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:32:41,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:32:41,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-10 12:32:41,470 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 12:32:41,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 12:32:41,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 12:32:41,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-10 12:32:41,470 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2018-11-10 12:32:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:32:41,550 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-11-10 12:32:41,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 12:32:41,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-11-10 12:32:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:32:41,552 INFO L225 Difference]: With dead ends: 34 [2018-11-10 12:32:41,552 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 12:32:41,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-10 12:32:41,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 12:32:41,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2018-11-10 12:32:41,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-10 12:32:41,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-11-10 12:32:41,560 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2018-11-10 12:32:41,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:32:41,561 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-11-10 12:32:41,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 12:32:41,561 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-11-10 12:32:41,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 12:32:41,561 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:32:41,561 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:32:41,562 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:32:41,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:32:41,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1392733261, now seen corresponding path program 1 times [2018-11-10 12:32:41,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 12:32:41,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:32:41,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:32:41,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:32:41,563 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 12:32:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:32:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:32:41,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:32:41,616 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 12:32:41,616 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-11-10 12:32:41,618 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [18], [22], [28], [30], [36], [39], [41], [44], [46], [47], [48], [49], [51], [52] [2018-11-10 12:32:41,654 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 12:32:41,654 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 12:32:41,862 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 12:32:41,863 INFO L272 AbstractInterpreter]: Visited 18 different actions 129 times. Merged at 8 different actions 59 times. Widened at 3 different actions 9 times. Found 8 fixpoints after 2 different actions. Largest state had 9 variables. [2018-11-10 12:32:41,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:32:41,873 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 12:32:41,937 INFO L227 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 59.03% of their original sizes. [2018-11-10 12:32:41,937 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 12:32:42,046 INFO L415 sIntCurrentIteration]: We unified 23 AI predicates to 23 [2018-11-10 12:32:42,047 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 12:32:42,047 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 12:32:42,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-11-10 12:32:42,048 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 12:32:42,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 12:32:42,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 12:32:42,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-10 12:32:42,049 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 9 states. [2018-11-10 12:32:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:32:42,297 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-10 12:32:42,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 12:32:42,298 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-11-10 12:32:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:32:42,298 INFO L225 Difference]: With dead ends: 28 [2018-11-10 12:32:42,298 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 12:32:42,299 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-11-10 12:32:42,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 12:32:42,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 12:32:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 12:32:42,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 12:32:42,299 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-11-10 12:32:42,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:32:42,299 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 12:32:42,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 12:32:42,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 12:32:42,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 12:32:42,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 12:32:42,481 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 12:32:42,481 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 12:32:42,481 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 12:32:42,481 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 12:32:42,481 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 12:32:42,481 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 12:32:42,481 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 26) no Hoare annotation was computed. [2018-11-10 12:32:42,481 INFO L421 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: (and (<= (* 2 main_~k~0) 4294967294) (<= main_~j~0 main_~k~0) (<= 2 (* 2 main_~j~0))) [2018-11-10 12:32:42,482 INFO L425 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-11-10 12:32:42,482 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 18) no Hoare annotation was computed. [2018-11-10 12:32:42,482 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 26) no Hoare annotation was computed. [2018-11-10 12:32:42,482 INFO L421 ceAbstractionStarter]: At program point L15-3(lines 15 18) the Hoare annotation is: (let ((.cse0 (* 2 main_~n~0)) (.cse1 (<= main_~k~0 main_~i~0))) (or (and (<= main_~n~0 (+ main_~i~0 2147483647)) (<= main_~i~0 0) (<= 0 (* 2 main_~k~0)) (<= 0 (+ .cse0 4294967296)) .cse1) (and (<= .cse0 4294967294) (<= main_~i~0 (+ main_~n~0 2147483648)) (<= (+ main_~i~0 main_~k~0) 4294967294) (<= main_~i~0 main_~k~0) .cse1 (<= 1 main_~k~0)))) [2018-11-10 12:32:42,482 INFO L425 ceAbstractionStarter]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2018-11-10 12:32:42,482 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 26) the Hoare annotation is: true [2018-11-10 12:32:42,482 INFO L425 ceAbstractionStarter]: For program point L20-1(lines 20 24) no Hoare annotation was computed. [2018-11-10 12:32:42,482 INFO L421 ceAbstractionStarter]: At program point L20-3(lines 20 24) the Hoare annotation is: (or (let ((.cse0 (* 2 main_~k~0))) (and (<= main_~k~0 (+ main_~j~0 2147483648)) (<= .cse0 4294967294) (<= 0 .cse0) (<= main_~j~0 main_~k~0))) (and (<= main_~n~0 0) (<= main_~j~0 0) (<= main_~i~0 0))) [2018-11-10 12:32:42,483 INFO L425 ceAbstractionStarter]: For program point L20-4(lines 20 24) no Hoare annotation was computed. [2018-11-10 12:32:42,483 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-10 12:32:42,483 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-10 12:32:42,483 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-10 12:32:42,483 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 12:32:42,483 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-10 12:32:42,483 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-10 12:32:42,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 12:32:42 BoogieIcfgContainer [2018-11-10 12:32:42,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 12:32:42,492 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 12:32:42,493 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 12:32:42,493 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 12:32:42,493 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:32:41" (3/4) ... [2018-11-10 12:32:42,495 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 12:32:42,499 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 12:32:42,499 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 12:32:42,499 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 12:32:42,502 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-11-10 12:32:42,502 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-10 12:32:42,502 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 12:32:42,530 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_dca14d87-fdbf-4fbb-9fdc-65740d66a1e7/bin-2019/utaipan/witness.graphml [2018-11-10 12:32:42,530 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 12:32:42,531 INFO L168 Benchmark]: Toolchain (without parser) took 1840.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 954.9 MB in the beginning and 956.8 MB in the end (delta: -2.0 MB). Peak memory consumption was 147.4 MB. Max. memory is 11.5 GB. [2018-11-10 12:32:42,532 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:32:42,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.46 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 12:32:42,532 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.51 ms. Allocated memory is still 1.0 GB. Free memory is still 944.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:32:42,533 INFO L168 Benchmark]: Boogie Preprocessor took 13.16 ms. Allocated memory is still 1.0 GB. Free memory was 944.0 MB in the beginning and 941.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:32:42,533 INFO L168 Benchmark]: RCFGBuilder took 203.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 941.3 MB in the beginning and 1.1 GB in the end (delta: -193.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 12:32:42,533 INFO L168 Benchmark]: TraceAbstraction took 1435.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 960.4 MB in the end (delta: 173.9 MB). Peak memory consumption was 173.9 MB. Max. memory is 11.5 GB. [2018-11-10 12:32:42,534 INFO L168 Benchmark]: Witness Printer took 37.74 ms. Allocated memory is still 1.2 GB. Free memory was 960.4 MB in the beginning and 956.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2018-11-10 12:32:42,535 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 137.46 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.51 ms. Allocated memory is still 1.0 GB. Free memory is still 944.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.16 ms. Allocated memory is still 1.0 GB. Free memory was 944.0 MB in the beginning and 941.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 203.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 941.3 MB in the beginning and 1.1 GB in the end (delta: -193.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1435.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 960.4 MB in the end (delta: 173.9 MB). Peak memory consumption was 173.9 MB. Max. memory is 11.5 GB. * Witness Printer took 37.74 ms. Allocated memory is still 1.2 GB. Free memory was 960.4 MB in the beginning and 956.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 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: 20]: Loop Invariant Derived loop invariant: (((k <= j + 2147483648 && 2 * k <= 4294967294) && 0 <= 2 * k) && j <= k) || ((n <= 0 && j <= 0) && i <= 0) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: ((((n <= i + 2147483647 && i <= 0) && 0 <= 2 * k) && 0 <= 2 * n + 4294967296) && k <= i) || (((((2 * n <= 4294967294 && i <= n + 2147483648) && i + k <= 4294967294) && i <= k) && k <= i) && 1 <= k) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 67 SDtfs, 34 SDslu, 142 SDs, 0 SdLazy, 54 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, 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, 0.9227053140096619 AbsIntWeakeningRatio, 0.5217391304347826 AbsIntAvgWeakeningVarsNumRemoved, 9.217391304347826 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 99 HoareAnnotationTreeSize, 11 FomulaSimplifications, 264 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 195 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 2003 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 7/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...