./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call2_true-termination.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-acceleration/simple_true-unreach-call2_true-termination.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 c77f087773c0ebeb64944776e94bc46443438d1a --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 09:49:42,767 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 09:49:42,770 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 09:49:42,786 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 09:49:42,787 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 09:49:42,789 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 09:49:42,791 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 09:49:42,793 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 09:49:42,796 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 09:49:42,798 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 09:49:42,801 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 09:49:42,802 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 09:49:42,803 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 09:49:42,806 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 09:49:42,815 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 09:49:42,815 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 09:49:42,816 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 09:49:42,818 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 09:49:42,821 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 09:49:42,824 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 09:49:42,826 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 09:49:42,828 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 09:49:42,833 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 09:49:42,834 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 09:49:42,834 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 09:49:42,835 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 09:49:42,837 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 09:49:42,838 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 09:49:42,838 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 09:49:42,842 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 09:49:42,842 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 09:49:42,843 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 09:49:42,845 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 09:49:42,845 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 09:49:42,846 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 09:49:42,847 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 09:49:42,847 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 09:49:42,873 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 09:49:42,874 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 09:49:42,875 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 09:49:42,876 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 09:49:42,876 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 09:49:42,876 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 09:49:42,876 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 09:49:42,877 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 09:49:42,878 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 09:49:42,878 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 09:49:42,878 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 09:49:42,879 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 09:49:42,880 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 09:49:42,880 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 09:49:42,880 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 09:49:42,881 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 09:49:42,881 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 09:49:42,881 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 09:49:42,881 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 09:49:42,881 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 09:49:42,881 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 09:49:42,882 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 09:49:42,882 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 09:49:42,882 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 09:49:42,882 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 09:49:42,882 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 09:49:42,882 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 09:49:42,883 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 09:49:42,885 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 09:49:42,885 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 09:49:42,886 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 09:49:42,886 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 09:49:42,886 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 09:49:42,887 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 09:49:42,887 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 -> c77f087773c0ebeb64944776e94bc46443438d1a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2018-10-22 09:49:42,964 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 09:49:42,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 09:49:42,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 09:49:42,989 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 09:49:42,989 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 09:49:42,990 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call2_true-termination.i [2018-10-22 09:49:43,049 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/006c3e34b/5ae2ae655136411ebdb1bd6daeb31acf/FLAG3d6135031 [2018-10-22 09:49:43,509 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 09:49:43,509 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call2_true-termination.i [2018-10-22 09:49:43,516 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/006c3e34b/5ae2ae655136411ebdb1bd6daeb31acf/FLAG3d6135031 [2018-10-22 09:49:43,532 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/006c3e34b/5ae2ae655136411ebdb1bd6daeb31acf [2018-10-22 09:49:43,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 09:49:43,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 09:49:43,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 09:49:43,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 09:49:43,543 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 09:49:43,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:49:43" (1/1) ... [2018-10-22 09:49:43,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5417ec95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:43, skipping insertion in model container [2018-10-22 09:49:43,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:49:43" (1/1) ... [2018-10-22 09:49:43,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 09:49:43,579 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 09:49:43,776 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 09:49:43,781 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 09:49:43,800 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 09:49:43,816 INFO L193 MainTranslator]: Completed translation [2018-10-22 09:49:43,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:43 WrapperNode [2018-10-22 09:49:43,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 09:49:43,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 09:49:43,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 09:49:43,818 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 09:49:43,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:43" (1/1) ... [2018-10-22 09:49:43,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:43" (1/1) ... [2018-10-22 09:49:43,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 09:49:43,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 09:49:43,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 09:49:43,841 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 09:49:43,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:43" (1/1) ... [2018-10-22 09:49:43,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:43" (1/1) ... [2018-10-22 09:49:43,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:43" (1/1) ... [2018-10-22 09:49:43,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:43" (1/1) ... [2018-10-22 09:49:43,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:43" (1/1) ... [2018-10-22 09:49:43,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:43" (1/1) ... [2018-10-22 09:49:43,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:43" (1/1) ... [2018-10-22 09:49:43,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 09:49:43,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 09:49:43,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 09:49:43,869 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 09:49:43,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:43" (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 09:49:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 09:49:43,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 09:49:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 09:49:43,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 09:49:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 09:49:43,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 09:49:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 09:49:43,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 09:49:44,155 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 09:49:44,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:49:44 BoogieIcfgContainer [2018-10-22 09:49:44,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 09:49:44,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 09:49:44,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 09:49:44,160 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 09:49:44,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:49:43" (1/3) ... [2018-10-22 09:49:44,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2f4227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:49:44, skipping insertion in model container [2018-10-22 09:49:44,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:43" (2/3) ... [2018-10-22 09:49:44,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2f4227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:49:44, skipping insertion in model container [2018-10-22 09:49:44,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:49:44" (3/3) ... [2018-10-22 09:49:44,164 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call2_true-termination.i [2018-10-22 09:49:44,174 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 09:49:44,181 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 09:49:44,198 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 09:49:44,230 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 09:49:44,231 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 09:49:44,231 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 09:49:44,231 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 09:49:44,232 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 09:49:44,232 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 09:49:44,232 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 09:49:44,232 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 09:49:44,232 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 09:49:44,250 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-10-22 09:49:44,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-22 09:49:44,256 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:49:44,257 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:49:44,259 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:49:44,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:49:44,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1296043710, now seen corresponding path program 1 times [2018-10-22 09:49:44,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:49:44,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:49:44,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:49:44,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:49:44,310 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:49:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:49:44,356 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 09:49:44,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 09:49:44,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 09:49:44,359 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:49:44,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 09:49:44,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 09:49:44,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 09:49:44,379 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-10-22 09:49:44,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:49:44,401 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-10-22 09:49:44,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 09:49:44,403 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-22 09:49:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:49:44,413 INFO L225 Difference]: With dead ends: 32 [2018-10-22 09:49:44,413 INFO L226 Difference]: Without dead ends: 15 [2018-10-22 09:49:44,417 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 09:49:44,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-22 09:49:44,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-22 09:49:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-22 09:49:44,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-22 09:49:44,456 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2018-10-22 09:49:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:49:44,456 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-22 09:49:44,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 09:49:44,456 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-22 09:49:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-22 09:49:44,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:49:44,457 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:49:44,457 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:49:44,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:49:44,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1861137605, now seen corresponding path program 1 times [2018-10-22 09:49:44,458 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:49:44,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:49:44,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:49:44,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:49:44,461 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:49:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:49:44,661 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 09:49:44,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 09:49:44,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 09:49:44,662 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:49:44,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 09:49:44,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 09:49:44,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 09:49:44,664 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2018-10-22 09:49:44,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:49:44,738 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-22 09:49:44,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 09:49:44,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-22 09:49:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:49:44,739 INFO L225 Difference]: With dead ends: 15 [2018-10-22 09:49:44,740 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 09:49:44,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 09:49:44,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 09:49:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 09:49:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 09:49:44,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 09:49:44,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-10-22 09:49:44,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:49:44,743 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 09:49:44,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 09:49:44,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 09:49:44,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 09:49:44,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 09:49:44,790 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 09:49:44,790 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 09:49:44,790 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 09:49:44,790 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 09:49:44,790 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 09:49:44,790 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 09:49:44,790 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 14) the Hoare annotation is: true [2018-10-22 09:49:44,791 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 14) no Hoare annotation was computed. [2018-10-22 09:49:44,794 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 14) no Hoare annotation was computed. [2018-10-22 09:49:44,795 INFO L425 ceAbstractionStarter]: For program point L11(line 11) no Hoare annotation was computed. [2018-10-22 09:49:44,795 INFO L425 ceAbstractionStarter]: For program point L11-1(line 11) no Hoare annotation was computed. [2018-10-22 09:49:44,795 INFO L425 ceAbstractionStarter]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2018-10-22 09:49:44,795 INFO L425 ceAbstractionStarter]: For program point L11-2(line 11) no Hoare annotation was computed. [2018-10-22 09:49:44,795 INFO L428 ceAbstractionStarter]: At program point L10-3(lines 10 12) the Hoare annotation is: true [2018-10-22 09:49:44,797 INFO L421 ceAbstractionStarter]: At program point L10-4(lines 10 12) the Hoare annotation is: (< (+ (* 4294967296 (div main_~x~0 4294967296)) 268435454) main_~x~0) [2018-10-22 09:49:44,797 INFO L425 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-10-22 09:49:44,798 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-10-22 09:49:44,798 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-10-22 09:49:44,798 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-10-22 09:49:44,798 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-10-22 09:49:44,802 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-10-22 09:49:44,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:49:44 BoogieIcfgContainer [2018-10-22 09:49:44,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 09:49:44,810 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 09:49:44,810 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 09:49:44,811 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 09:49:44,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:49:44" (3/4) ... [2018-10-22 09:49:44,817 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-22 09:49:44,826 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-22 09:49:44,827 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-22 09:49:44,827 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-22 09:49:44,833 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-10-22 09:49:44,834 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-22 09:49:44,834 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-22 09:49:44,874 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 09:49:44,874 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 09:49:44,875 INFO L168 Benchmark]: Toolchain (without parser) took 1337.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 954.5 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 5.2 MB. Max. memory is 11.5 GB. [2018-10-22 09:49:44,876 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 09:49:44,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.27 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-22 09:49:44,878 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.96 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:49:44,879 INFO L168 Benchmark]: Boogie Preprocessor took 26.89 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:49:44,879 INFO L168 Benchmark]: RCFGBuilder took 288.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-10-22 09:49:44,880 INFO L168 Benchmark]: TraceAbstraction took 653.03 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: 35.0 MB). Peak memory consumption was 35.0 MB. Max. memory is 11.5 GB. [2018-10-22 09:49:44,881 INFO L168 Benchmark]: Witness Printer took 63.86 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 09:49:44,885 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 278.27 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 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 22.96 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.89 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 288.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 653.03 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: 35.0 MB). Peak memory consumption was 35.0 MB. Max. memory is 11.5 GB. * Witness Printer took 63.86 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: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 1 SDslu, 30 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 15 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 301 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...