./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-acceleration/overflow_true-unreach-call1.i --full-output --rcfgbuilder.size.of.a.code.block LoopFreeBlock --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-acceleration/overflow_true-unreach-call1.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 758e11db5477313a713e54f54bb9ddc1e042288b --rcfgbuilder.size.of.a.code.block LoopFreeBlock ....................................................................................................................................................................................................................................................................................................................................................................... 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 10:13:58,834 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 10:13:58,837 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 10:13:58,852 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 10:13:58,853 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 10:13:58,854 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 10:13:58,855 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 10:13:58,857 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 10:13:58,859 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 10:13:58,859 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 10:13:58,860 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 10:13:58,860 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 10:13:58,867 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 10:13:58,868 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 10:13:58,869 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 10:13:58,869 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 10:13:58,870 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 10:13:58,872 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 10:13:58,874 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 10:13:58,875 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 10:13:58,876 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 10:13:58,877 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 10:13:58,879 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 10:13:58,879 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 10:13:58,880 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 10:13:58,880 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 10:13:58,881 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 10:13:58,882 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 10:13:58,883 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 10:13:58,884 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 10:13:58,884 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 10:13:58,884 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 10:13:58,885 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 10:13:58,885 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 10:13:58,886 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 10:13:58,888 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 10:13:58,889 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 10:13:58,916 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 10:13:58,916 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 10:13:58,917 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 10:13:58,917 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 10:13:58,917 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 10:13:58,917 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 10:13:58,917 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 10:13:58,922 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 10:13:58,922 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 10:13:58,922 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 10:13:58,922 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 10:13:58,923 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 10:13:58,923 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 10:13:58,923 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 10:13:58,924 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 10:13:58,924 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 10:13:58,924 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 10:13:58,924 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 10:13:58,924 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 10:13:58,925 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 10:13:58,925 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 10:13:58,925 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 10:13:58,925 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 10:13:58,925 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 10:13:58,925 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 10:13:58,926 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 10:13:58,927 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 10:13:58,927 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 10:13:58,927 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 10:13:58,927 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 10:13:58,928 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 10:13:58,928 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 10:13:58,928 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 10:13:58,928 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 10:13:58,928 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 -> 758e11db5477313a713e54f54bb9ddc1e042288b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock [2018-10-22 10:13:58,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 10:13:58,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 10:13:59,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 10:13:59,001 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 10:13:59,002 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 10:13:59,002 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-acceleration/overflow_true-unreach-call1.i [2018-10-22 10:13:59,059 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bd6c8e517/4fabc7e5ad0d403fb300deeec9fcb8cc/FLAGef6c5d36c [2018-10-22 10:13:59,536 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 10:13:59,537 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/overflow_true-unreach-call1.i [2018-10-22 10:13:59,545 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bd6c8e517/4fabc7e5ad0d403fb300deeec9fcb8cc/FLAGef6c5d36c [2018-10-22 10:13:59,562 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bd6c8e517/4fabc7e5ad0d403fb300deeec9fcb8cc [2018-10-22 10:13:59,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 10:13:59,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 10:13:59,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 10:13:59,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 10:13:59,574 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 10:13:59,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:13:59" (1/1) ... [2018-10-22 10:13:59,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d175f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:13:59, skipping insertion in model container [2018-10-22 10:13:59,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:13:59" (1/1) ... [2018-10-22 10:13:59,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 10:13:59,618 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 10:13:59,849 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 10:13:59,855 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 10:13:59,873 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 10:13:59,891 INFO L193 MainTranslator]: Completed translation [2018-10-22 10:13:59,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:13:59 WrapperNode [2018-10-22 10:13:59,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 10:13:59,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 10:13:59,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 10:13:59,894 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 10:13:59,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:13:59" (1/1) ... [2018-10-22 10:13:59,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:13:59" (1/1) ... [2018-10-22 10:13:59,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 10:13:59,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 10:13:59,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 10:13:59,919 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 10:13:59,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:13:59" (1/1) ... [2018-10-22 10:13:59,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:13:59" (1/1) ... [2018-10-22 10:13:59,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:13:59" (1/1) ... [2018-10-22 10:13:59,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:13:59" (1/1) ... [2018-10-22 10:13:59,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:13:59" (1/1) ... [2018-10-22 10:13:59,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:13:59" (1/1) ... [2018-10-22 10:13:59,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:13:59" (1/1) ... [2018-10-22 10:13:59,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 10:13:59,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 10:13:59,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 10:13:59,949 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 10:13:59,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:13:59" (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 10:14:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 10:14:00,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 10:14:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 10:14:00,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 10:14:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 10:14:00,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 10:14:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 10:14:00,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 10:14:00,282 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 10:14:00,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:14:00 BoogieIcfgContainer [2018-10-22 10:14:00,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 10:14:00,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 10:14:00,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 10:14:00,288 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 10:14:00,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 10:13:59" (1/3) ... [2018-10-22 10:14:00,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c08578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 10:14:00, skipping insertion in model container [2018-10-22 10:14:00,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:13:59" (2/3) ... [2018-10-22 10:14:00,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c08578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 10:14:00, skipping insertion in model container [2018-10-22 10:14:00,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:14:00" (3/3) ... [2018-10-22 10:14:00,292 INFO L112 eAbstractionObserver]: Analyzing ICFG overflow_true-unreach-call1.i [2018-10-22 10:14:00,300 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 10:14:00,307 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 10:14:00,322 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 10:14:00,355 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 10:14:00,356 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 10:14:00,356 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 10:14:00,357 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 10:14:00,357 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 10:14:00,357 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 10:14:00,357 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 10:14:00,357 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 10:14:00,357 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 10:14:00,375 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-10-22 10:14:00,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-22 10:14:00,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:14:00,382 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:14:00,385 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:14:00,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:14:00,393 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-10-22 10:14:00,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:14:00,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:14:00,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:14:00,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:14:00,451 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:14:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:14:00,511 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 10:14:00,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 10:14:00,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 10:14:00,514 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:14:00,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 10:14:00,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 10:14:00,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 10:14:00,537 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-10-22 10:14:00,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:14:00,560 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-10-22 10:14:00,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 10:14:00,562 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-22 10:14:00,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:14:00,571 INFO L225 Difference]: With dead ends: 29 [2018-10-22 10:14:00,571 INFO L226 Difference]: Without dead ends: 12 [2018-10-22 10:14:00,575 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 [2018-10-22 10:14:00,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-22 10:14:00,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-22 10:14:00,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-22 10:14:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-22 10:14:00,610 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-22 10:14:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:14:00,610 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-22 10:14:00,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 10:14:00,611 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-22 10:14:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-22 10:14:00,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:14:00,612 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:14:00,612 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:14:00,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:14:00,613 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-10-22 10:14:00,613 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:14:00,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:14:00,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:14:00,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:14:00,615 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:14:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:14:00,766 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 10:14:00,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 10:14:00,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-22 10:14:00,767 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:14:00,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-22 10:14:00,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-22 10:14:00,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-22 10:14:00,770 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-10-22 10:14:00,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:14:00,818 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-22 10:14:00,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-22 10:14:00,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-10-22 10:14:00,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:14:00,819 INFO L225 Difference]: With dead ends: 19 [2018-10-22 10:14:00,820 INFO L226 Difference]: Without dead ends: 14 [2018-10-22 10:14:00,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-22 10:14:00,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-22 10:14:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-22 10:14:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-22 10:14:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-22 10:14:00,828 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-22 10:14:00,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:14:00,828 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-22 10:14:00,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-22 10:14:00,829 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-22 10:14:00,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-22 10:14:00,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:14:00,829 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:14:00,833 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:14:00,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:14:00,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1625028318, now seen corresponding path program 1 times [2018-10-22 10:14:00,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:14:00,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:14:00,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:14:00,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:14:00,835 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:14:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:14:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 10:14:01,009 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:14:01,009 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 10:14:01,011 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-10-22 10:14:01,012 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [20], [23], [25], [31], [32], [33], [35] [2018-10-22 10:14:01,056 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 10:14:01,057 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 10:14:01,159 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-22 10:14:01,392 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 10:14:01,395 INFO L272 AbstractInterpreter]: Visited 11 different actions 47 times. Merged at 3 different actions 19 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-10-22 10:14:01,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:14:01,406 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 10:14:01,499 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-10-22 10:14:01,500 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 10:14:01,598 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 10:14:01,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 10:14:01,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2018-10-22 10:14:01,599 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:14:01,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 10:14:01,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 10:14:01,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 10:14:01,603 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-10-22 10:14:01,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:14:01,726 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-22 10:14:01,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 10:14:01,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-10-22 10:14:01,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:14:01,727 INFO L225 Difference]: With dead ends: 14 [2018-10-22 10:14:01,727 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 10:14:01,729 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-22 10:14:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 10:14:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 10:14:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 10:14:01,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 10:14:01,730 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-10-22 10:14:01,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:14:01,731 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 10:14:01,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 10:14:01,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 10:14:01,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 10:14:01,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 10:14:01,789 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 10:14:01,789 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 10:14:01,789 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 10:14:01,789 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 10:14:01,789 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 10:14:01,790 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 10:14:01,790 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 14) the Hoare annotation is: true [2018-10-22 10:14:01,790 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 14) no Hoare annotation was computed. [2018-10-22 10:14:01,790 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 14) no Hoare annotation was computed. [2018-10-22 10:14:01,790 INFO L425 ceAbstractionStarter]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2018-10-22 10:14:01,790 INFO L421 ceAbstractionStarter]: At program point L10-3(lines 10 12) the Hoare annotation is: (and (<= 20 (* 2 main_~x~0)) (= (mod main_~x~0 2) 0)) [2018-10-22 10:14:01,791 INFO L421 ceAbstractionStarter]: At program point L10-4(lines 10 12) the Hoare annotation is: (and (<= 20 (* 2 main_~x~0)) (= (mod main_~x~0 2) 0)) [2018-10-22 10:14:01,791 INFO L425 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-10-22 10:14:01,791 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-10-22 10:14:01,791 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-10-22 10:14:01,791 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-10-22 10:14:01,791 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-10-22 10:14:01,792 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-10-22 10:14:01,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 10:14:01 BoogieIcfgContainer [2018-10-22 10:14:01,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 10:14:01,802 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 10:14:01,802 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 10:14:01,802 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 10:14:01,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:14:00" (3/4) ... [2018-10-22 10:14:01,805 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-22 10:14:01,810 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-22 10:14:01,811 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-22 10:14:01,811 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-22 10:14:01,815 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-10-22 10:14:01,815 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-22 10:14:01,815 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-22 10:14:01,857 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 10:14:01,857 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 10:14:01,858 INFO L168 Benchmark]: Toolchain (without parser) took 2290.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -108.3 MB). Peak memory consumption was 44.8 MB. Max. memory is 11.5 GB. [2018-10-22 10:14:01,860 INFO L168 Benchmark]: CDTParser took 0.18 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 10:14:01,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.75 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 10:14:01,861 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.55 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 10:14:01,862 INFO L168 Benchmark]: Boogie Preprocessor took 29.52 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 10:14:01,862 INFO L168 Benchmark]: RCFGBuilder took 335.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2018-10-22 10:14:01,863 INFO L168 Benchmark]: TraceAbstraction took 1516.92 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: 72.0 MB). Peak memory consumption was 72.0 MB. Max. memory is 11.5 GB. [2018-10-22 10:14:01,864 INFO L168 Benchmark]: Witness Printer took 55.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 10:14:01,869 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 323.75 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 24.55 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 29.52 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 335.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1516.92 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: 72.0 MB). Peak memory consumption was 72.0 MB. Max. memory is 11.5 GB. * Witness Printer took 55.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 10]: Loop Invariant Derived loop invariant: 20 <= 2 * x && x % 2 == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 SDtfs, 1 SDslu, 27 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.875 AbsIntWeakeningRatio, 0.25 AbsIntAvgWeakeningVarsNumRemoved, 0.5833333333333334 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 27 HoareAnnotationTreeSize, 9 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 733 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...