./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-lit/css2003_true-unreach-call_true-termination.c.i --full-output --rcfgbuilder.size.of.a.code.block SingleStatement --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0210da8c Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i ../../../trunk/examples/svcomp/loop-lit/css2003_true-unreach-call_true-termination.c.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --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 88d33ff91b99a769018021c2f8754b39298cafbb --rcfgbuilder.size.of.a.code.block SingleStatement ............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0210da8 [2018-10-22 09:54:12,970 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 09:54:12,972 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 09:54:12,987 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 09:54:12,987 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 09:54:12,988 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 09:54:12,990 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 09:54:12,992 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 09:54:12,993 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 09:54:12,994 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 09:54:12,995 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 09:54:12,996 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 09:54:12,997 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 09:54:12,998 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 09:54:12,999 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 09:54:13,000 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 09:54:13,001 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 09:54:13,003 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 09:54:13,008 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 09:54:13,012 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 09:54:13,014 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 09:54:13,015 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 09:54:13,017 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 09:54:13,017 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 09:54:13,017 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 09:54:13,018 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 09:54:13,019 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 09:54:13,020 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 09:54:13,021 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 09:54:13,022 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 09:54:13,022 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 09:54:13,022 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 09:54:13,023 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 09:54:13,023 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 09:54:13,024 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 09:54:13,024 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 09:54:13,025 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 09:54:13,047 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 09:54:13,048 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 09:54:13,049 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 09:54:13,049 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 09:54:13,049 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 09:54:13,049 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 09:54:13,049 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 09:54:13,050 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 09:54:13,050 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 09:54:13,050 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 09:54:13,050 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 09:54:13,051 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 09:54:13,051 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 09:54:13,051 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 09:54:13,051 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 09:54:13,052 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 09:54:13,052 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 09:54:13,052 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 09:54:13,052 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 09:54:13,052 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 09:54:13,052 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 09:54:13,053 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 09:54:13,053 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 09:54:13,053 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 09:54:13,053 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 09:54:13,053 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 09:54:13,054 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 09:54:13,054 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 09:54:13,054 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 09:54:13,054 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 09:54:13,054 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 09:54:13,055 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 09:54:13,055 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 09:54:13,055 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 09:54:13,055 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 -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux 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 -> 88d33ff91b99a769018021c2f8754b39298cafbb Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2018-10-22 09:54:13,133 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 09:54:13,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 09:54:13,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 09:54:13,157 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 09:54:13,158 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 09:54:13,160 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-lit/css2003_true-unreach-call_true-termination.c.i [2018-10-22 09:54:13,216 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/837e77394/fd925ff01a644c39b44fc12cce56b64d/FLAG07dbd0206 [2018-10-22 09:54:13,670 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 09:54:13,673 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003_true-unreach-call_true-termination.c.i [2018-10-22 09:54:13,689 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/837e77394/fd925ff01a644c39b44fc12cce56b64d/FLAG07dbd0206 [2018-10-22 09:54:13,704 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/837e77394/fd925ff01a644c39b44fc12cce56b64d [2018-10-22 09:54:13,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 09:54:13,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 09:54:13,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 09:54:13,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 09:54:13,716 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 09:54:13,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:54:13" (1/1) ... [2018-10-22 09:54:13,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@558bd264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:13, skipping insertion in model container [2018-10-22 09:54:13,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:54:13" (1/1) ... [2018-10-22 09:54:13,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 09:54:13,752 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 09:54:13,989 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 09:54:13,993 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 09:54:14,013 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 09:54:14,031 INFO L193 MainTranslator]: Completed translation [2018-10-22 09:54:14,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:14 WrapperNode [2018-10-22 09:54:14,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 09:54:14,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 09:54:14,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 09:54:14,033 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 09:54:14,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:14" (1/1) ... [2018-10-22 09:54:14,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:14" (1/1) ... [2018-10-22 09:54:14,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 09:54:14,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 09:54:14,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 09:54:14,055 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 09:54:14,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:14" (1/1) ... [2018-10-22 09:54:14,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:14" (1/1) ... [2018-10-22 09:54:14,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:14" (1/1) ... [2018-10-22 09:54:14,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:14" (1/1) ... [2018-10-22 09:54:14,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:14" (1/1) ... [2018-10-22 09:54:14,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:14" (1/1) ... [2018-10-22 09:54:14,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:14" (1/1) ... [2018-10-22 09:54:14,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 09:54:14,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 09:54:14,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 09:54:14,085 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 09:54:14,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-22 09:54:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 09:54:14,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 09:54:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 09:54:14,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 09:54:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 09:54:14,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 09:54:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 09:54:14,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 09:54:14,677 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 09:54:14,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:54:14 BoogieIcfgContainer [2018-10-22 09:54:14,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 09:54:14,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 09:54:14,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 09:54:14,682 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 09:54:14,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:54:13" (1/3) ... [2018-10-22 09:54:14,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d8e426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:54:14, skipping insertion in model container [2018-10-22 09:54:14,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:14" (2/3) ... [2018-10-22 09:54:14,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d8e426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:54:14, skipping insertion in model container [2018-10-22 09:54:14,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:54:14" (3/3) ... [2018-10-22 09:54:14,686 INFO L112 eAbstractionObserver]: Analyzing ICFG css2003_true-unreach-call_true-termination.c.i [2018-10-22 09:54:14,696 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 09:54:14,704 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 09:54:14,719 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 09:54:14,754 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 09:54:14,755 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 09:54:14,755 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 09:54:14,755 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 09:54:14,755 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 09:54:14,755 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 09:54:14,756 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 09:54:14,756 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 09:54:14,756 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 09:54:14,775 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-10-22 09:54:14,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-22 09:54:14,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:54:14,784 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, 1, 1] [2018-10-22 09:54:14,786 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:54:14,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:54:14,792 INFO L82 PathProgramCache]: Analyzing trace with hash 2106854320, now seen corresponding path program 1 times [2018-10-22 09:54:14,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:54:14,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:14,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:54:14,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:14,839 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:54:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:54:15,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 09:54:15,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 09:54:15,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-22 09:54:15,237 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:54:15,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-22 09:54:15,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-22 09:54:15,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-10-22 09:54:15,258 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 8 states. [2018-10-22 09:54:15,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:54:15,661 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-10-22 09:54:15,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-22 09:54:15,663 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-10-22 09:54:15,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:54:15,670 INFO L225 Difference]: With dead ends: 51 [2018-10-22 09:54:15,670 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 09:54:15,674 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-22 09:54:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 09:54:15,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 09:54:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 09:54:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 09:54:15,703 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-10-22 09:54:15,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:54:15,704 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 09:54:15,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-22 09:54:15,704 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 09:54:15,704 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 09:54:15,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 09:54:16,014 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-10-22 09:54:16,028 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 09:54:16,028 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 09:54:16,028 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 09:54:16,029 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 09:54:16,029 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 09:54:16,029 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 09:54:16,029 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2018-10-22 09:54:16,029 INFO L425 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-10-22 09:54:16,029 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-10-22 09:54:16,029 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-22 09:54:16,030 INFO L425 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-10-22 09:54:16,030 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-10-22 09:54:16,032 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2018-10-22 09:54:16,032 INFO L425 ceAbstractionStarter]: For program point L11(line 11) no Hoare annotation was computed. [2018-10-22 09:54:16,032 INFO L425 ceAbstractionStarter]: For program point L11-1(line 11) no Hoare annotation was computed. [2018-10-22 09:54:16,033 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2018-10-22 09:54:16,033 INFO L421 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= .cse0 2) (<= 2 main_~i~0) (<= 1 .cse0))) [2018-10-22 09:54:16,034 INFO L421 ceAbstractionStarter]: At program point L20-1(lines 16 21) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= .cse0 2) (<= 1 main_~i~0) (<= 1 .cse0))) [2018-10-22 09:54:16,035 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-10-22 09:54:16,036 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 16 21) no Hoare annotation was computed. [2018-10-22 09:54:16,036 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-22 09:54:16,036 INFO L425 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-10-22 09:54:16,036 INFO L425 ceAbstractionStarter]: For program point L16-3(lines 16 21) no Hoare annotation was computed. [2018-10-22 09:54:16,036 INFO L425 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2018-10-22 09:54:16,036 INFO L425 ceAbstractionStarter]: For program point L14-2(line 14) no Hoare annotation was computed. [2018-10-22 09:54:16,037 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 09:54:16,037 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 09:54:16,037 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 09:54:16,037 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 09:54:16,037 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 09:54:16,037 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 09:54:16,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:54:16 BoogieIcfgContainer [2018-10-22 09:54:16,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 09:54:16,058 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 09:54:16,058 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 09:54:16,059 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 09:54:16,060 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:54:14" (3/4) ... [2018-10-22 09:54:16,065 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-22 09:54:16,072 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-22 09:54:16,075 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-22 09:54:16,077 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-22 09:54:16,085 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-10-22 09:54:16,086 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-22 09:54:16,086 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-22 09:54:16,131 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 09:54:16,131 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 09:54:16,132 INFO L168 Benchmark]: Toolchain (without parser) took 2422.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -119.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2018-10-22 09:54:16,133 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:54:16,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.68 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-22 09:54:16,136 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.15 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:54:16,136 INFO L168 Benchmark]: Boogie Preprocessor took 29.15 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:54:16,137 INFO L168 Benchmark]: RCFGBuilder took 593.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -183.8 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2018-10-22 09:54:16,137 INFO L168 Benchmark]: TraceAbstraction took 1379.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. [2018-10-22 09:54:16,138 INFO L168 Benchmark]: Witness Printer took 72.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-10-22 09:54:16,142 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 320.68 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 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 22.15 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.15 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 593.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -183.8 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1379.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. * Witness Printer took 72.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (i + k <= 2 && 1 <= i) && 1 <= i + k - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 19 SDslu, 96 SDs, 0 SdLazy, 61 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 11 NumberOfFragments, 33 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 2793 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...