./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call4.i --full-output --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-call4.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 b029b10ca3d148e0660858adbe98f8ac38a6e21c ...................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0210da8 [2018-10-21 12:34:16,867 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-21 12:34:16,869 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-21 12:34:16,881 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-21 12:34:16,881 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-21 12:34:16,882 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-21 12:34:16,884 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-21 12:34:16,886 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-21 12:34:16,888 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-21 12:34:16,889 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-21 12:34:16,890 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-21 12:34:16,890 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-21 12:34:16,891 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-21 12:34:16,892 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-21 12:34:16,894 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-21 12:34:16,895 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-21 12:34:16,896 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-21 12:34:16,898 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-21 12:34:16,900 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-21 12:34:16,902 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-21 12:34:16,903 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-21 12:34:16,905 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-21 12:34:16,907 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-21 12:34:16,908 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-21 12:34:16,908 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-21 12:34:16,909 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-21 12:34:16,910 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-21 12:34:16,911 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-21 12:34:16,913 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-21 12:34:16,914 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-21 12:34:16,914 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-21 12:34:16,915 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-21 12:34:16,915 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-21 12:34:16,915 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-21 12:34:16,917 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-21 12:34:16,918 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-21 12:34:16,918 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-21 12:34:16,943 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-21 12:34:16,943 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-21 12:34:16,944 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-21 12:34:16,944 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-21 12:34:16,945 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-21 12:34:16,945 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-21 12:34:16,945 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-21 12:34:16,946 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-21 12:34:16,946 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-21 12:34:16,946 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-21 12:34:16,946 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-21 12:34:16,948 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-21 12:34:16,948 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-21 12:34:16,948 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-21 12:34:16,948 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-21 12:34:16,949 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-21 12:34:16,949 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-21 12:34:16,949 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-21 12:34:16,949 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-21 12:34:16,949 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-21 12:34:16,949 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-21 12:34:16,951 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-21 12:34:16,951 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-21 12:34:16,951 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-21 12:34:16,951 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-21 12:34:16,951 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-21 12:34:16,952 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-21 12:34:16,952 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-21 12:34:16,952 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-21 12:34:16,952 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-21 12:34:16,952 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-21 12:34:16,953 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-21 12:34:16,954 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-21 12:34:16,954 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-21 12:34:16,954 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 -> b029b10ca3d148e0660858adbe98f8ac38a6e21c [2018-10-21 12:34:17,004 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-21 12:34:17,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-21 12:34:17,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-21 12:34:17,026 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-21 12:34:17,027 INFO L276 PluginConnector]: CDTParser initialized [2018-10-21 12:34:17,028 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call4.i [2018-10-21 12:34:17,089 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/735bdef7b/6d61043592eb43a38cf538f6e0e566d6/FLAGde1c69859 [2018-10-21 12:34:17,543 INFO L298 CDTParser]: Found 1 translation units. [2018-10-21 12:34:17,544 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call4.i [2018-10-21 12:34:17,551 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/735bdef7b/6d61043592eb43a38cf538f6e0e566d6/FLAGde1c69859 [2018-10-21 12:34:17,567 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/735bdef7b/6d61043592eb43a38cf538f6e0e566d6 [2018-10-21 12:34:17,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-21 12:34:17,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-21 12:34:17,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-21 12:34:17,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-21 12:34:17,581 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-21 12:34:17,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 12:34:17" (1/1) ... [2018-10-21 12:34:17,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f512e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:34:17, skipping insertion in model container [2018-10-21 12:34:17,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 12:34:17" (1/1) ... [2018-10-21 12:34:17,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-21 12:34:17,617 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-21 12:34:17,798 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-21 12:34:17,803 INFO L189 MainTranslator]: Completed pre-run [2018-10-21 12:34:17,821 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-21 12:34:17,839 INFO L193 MainTranslator]: Completed translation [2018-10-21 12:34:17,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:34:17 WrapperNode [2018-10-21 12:34:17,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-21 12:34:17,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-21 12:34:17,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-21 12:34:17,841 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-21 12:34:17,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:34:17" (1/1) ... [2018-10-21 12:34:17,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:34:17" (1/1) ... [2018-10-21 12:34:17,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-21 12:34:17,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-21 12:34:17,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-21 12:34:17,866 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-21 12:34:17,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:34:17" (1/1) ... [2018-10-21 12:34:17,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:34:17" (1/1) ... [2018-10-21 12:34:17,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:34:17" (1/1) ... [2018-10-21 12:34:17,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:34:17" (1/1) ... [2018-10-21 12:34:17,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:34:17" (1/1) ... [2018-10-21 12:34:17,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:34:17" (1/1) ... [2018-10-21 12:34:17,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:34:17" (1/1) ... [2018-10-21 12:34:17,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-21 12:34:17,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-21 12:34:17,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-21 12:34:17,896 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-21 12:34:17,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:34:17" (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 [2018-10-21 12:34:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-21 12:34:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-21 12:34:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-21 12:34:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-21 12:34:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-21 12:34:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-21 12:34:17,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-21 12:34:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-21 12:34:18,319 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-21 12:34:18,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:34:18 BoogieIcfgContainer [2018-10-21 12:34:18,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-21 12:34:18,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-21 12:34:18,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-21 12:34:18,324 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-21 12:34:18,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 12:34:17" (1/3) ... [2018-10-21 12:34:18,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abe45c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 12:34:18, skipping insertion in model container [2018-10-21 12:34:18,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:34:17" (2/3) ... [2018-10-21 12:34:18,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abe45c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 12:34:18, skipping insertion in model container [2018-10-21 12:34:18,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:34:18" (3/3) ... [2018-10-21 12:34:18,328 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call4.i [2018-10-21 12:34:18,337 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-21 12:34:18,345 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-21 12:34:18,362 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-21 12:34:18,402 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-21 12:34:18,403 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-21 12:34:18,403 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-21 12:34:18,404 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-21 12:34:18,404 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-21 12:34:18,404 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-21 12:34:18,404 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-21 12:34:18,404 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-21 12:34:18,404 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-21 12:34:18,423 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-10-21 12:34:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-21 12:34:18,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:34:18,430 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:34:18,432 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:34:18,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:34:18,439 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-10-21 12:34:18,442 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:34:18,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:34:18,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:34:18,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:34:18,489 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:34:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:34:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:34:18,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-21 12:34:18,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-21 12:34:18,555 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:34:18,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-21 12:34:18,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-21 12:34:18,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-21 12:34:18,582 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-10-21 12:34:18,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:34:18,603 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-10-21 12:34:18,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-21 12:34:18,604 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-21 12:34:18,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:34:18,615 INFO L225 Difference]: With dead ends: 29 [2018-10-21 12:34:18,615 INFO L226 Difference]: Without dead ends: 12 [2018-10-21 12:34:18,619 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 [2018-10-21 12:34:18,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-21 12:34:18,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-21 12:34:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-21 12:34:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-21 12:34:18,658 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-21 12:34:18,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:34:18,658 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-21 12:34:18,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-21 12:34:18,658 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-21 12:34:18,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-21 12:34:18,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:34:18,659 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:34:18,660 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:34:18,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:34:18,660 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-10-21 12:34:18,660 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:34:18,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:34:18,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:34:18,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:34:18,662 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:34:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:34:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:34:18,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-21 12:34:18,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-21 12:34:18,821 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:34:18,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-21 12:34:18,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-21 12:34:18,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-21 12:34:18,828 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-10-21 12:34:18,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:34:18,883 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-21 12:34:18,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-21 12:34:18,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-10-21 12:34:18,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:34:18,885 INFO L225 Difference]: With dead ends: 19 [2018-10-21 12:34:18,885 INFO L226 Difference]: Without dead ends: 14 [2018-10-21 12:34:18,886 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 [2018-10-21 12:34:18,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-21 12:34:18,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-21 12:34:18,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-21 12:34:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-21 12:34:18,891 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-21 12:34:18,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:34:18,891 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-21 12:34:18,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-21 12:34:18,891 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-21 12:34:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-21 12:34:18,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:34:18,892 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:34:18,893 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:34:18,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:34:18,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1625028318, now seen corresponding path program 1 times [2018-10-21 12:34:18,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:34:18,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:34:18,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:34:18,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:34:18,895 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:34:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:34:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:34:19,066 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:34:19,066 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-21 12:34:19,067 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-10-21 12:34:19,069 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [20], [23], [25], [31], [32], [33], [35] [2018-10-21 12:34:19,120 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-21 12:34:19,120 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-21 12:34:19,299 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-21 12:34:19,753 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-21 12:34:19,755 INFO L272 AbstractInterpreter]: Visited 11 different actions 83 times. Merged at 3 different actions 37 times. Widened at 1 different actions 9 times. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-10-21 12:34:19,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:34:19,800 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-21 12:34:19,910 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-10-21 12:34:19,910 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-21 12:34:20,088 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-21 12:34:20,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-21 12:34:20,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2018-10-21 12:34:20,089 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:34:20,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-21 12:34:20,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-21 12:34:20,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-21 12:34:20,095 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-10-21 12:34:20,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:34:20,208 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-21 12:34:20,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-21 12:34:20,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-10-21 12:34:20,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:34:20,210 INFO L225 Difference]: With dead ends: 14 [2018-10-21 12:34:20,210 INFO L226 Difference]: Without dead ends: 0 [2018-10-21 12:34:20,211 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 [2018-10-21 12:34:20,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-21 12:34:20,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-21 12:34:20,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-21 12:34:20,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-21 12:34:20,213 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-10-21 12:34:20,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:34:20,213 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-21 12:34:20,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-21 12:34:20,214 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-21 12:34:20,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-21 12:34:20,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-21 12:34:20,305 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-21 12:34:20,305 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-21 12:34:20,306 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-21 12:34:20,306 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-21 12:34:20,306 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-21 12:34:20,306 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-21 12:34:20,306 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 14) the Hoare annotation is: true [2018-10-21 12:34:20,306 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 14) no Hoare annotation was computed. [2018-10-21 12:34:20,306 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 14) no Hoare annotation was computed. [2018-10-21 12:34:20,306 INFO L425 ceAbstractionStarter]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2018-10-21 12:34:20,307 INFO L421 ceAbstractionStarter]: At program point L10-3(lines 10 12) the Hoare annotation is: (and (<= (* 2 main_~x~0) 536870880) (= (mod main_~x~0 2) 0)) [2018-10-21 12:34:20,307 INFO L421 ceAbstractionStarter]: At program point L10-4(lines 10 12) the Hoare annotation is: (and (<= (* 2 main_~x~0) 536870880) (= (mod main_~x~0 2) 0)) [2018-10-21 12:34:20,307 INFO L425 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-10-21 12:34:20,307 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-10-21 12:34:20,307 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-10-21 12:34:20,307 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-10-21 12:34:20,308 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-10-21 12:34:20,308 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-10-21 12:34:20,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 12:34:20 BoogieIcfgContainer [2018-10-21 12:34:20,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-21 12:34:20,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-21 12:34:20,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-21 12:34:20,317 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-21 12:34:20,318 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:34:18" (3/4) ... [2018-10-21 12:34:20,321 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-21 12:34:20,326 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-21 12:34:20,326 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-21 12:34:20,326 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-21 12:34:20,329 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-10-21 12:34:20,329 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-21 12:34:20,330 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-21 12:34:20,373 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-21 12:34:20,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-21 12:34:20,374 INFO L168 Benchmark]: Toolchain (without parser) took 2799.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.6 MB). Free memory was 953.2 MB in the beginning and 982.0 MB in the end (delta: -28.8 MB). Peak memory consumption was 48.7 MB. Max. memory is 11.5 GB. [2018-10-21 12:34:20,376 INFO L168 Benchmark]: CDTParser took 0.43 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. [2018-10-21 12:34:20,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.80 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-21 12:34:20,377 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.54 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:34:20,378 INFO L168 Benchmark]: Boogie Preprocessor took 28.71 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:34:20,378 INFO L168 Benchmark]: RCFGBuilder took 424.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.6 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -117.3 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2018-10-21 12:34:20,379 INFO L168 Benchmark]: TraceAbstraction took 1996.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 982.0 MB in the end (delta: 77.7 MB). Peak memory consumption was 77.7 MB. Max. memory is 11.5 GB. [2018-10-21 12:34:20,380 INFO L168 Benchmark]: Witness Printer took 55.94 ms. Allocated memory is still 1.1 GB. Free memory is still 982.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:34:20,385 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 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 263.80 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 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 24.54 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.71 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 424.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.6 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -117.3 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1996.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 982.0 MB in the end (delta: 77.7 MB). Peak memory consumption was 77.7 MB. Max. memory is 11.5 GB. * Witness Printer took 55.94 ms. Allocated memory is still 1.1 GB. Free memory is still 982.0 MB. 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: 2 * x <= 536870880 && x % 2 == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 1.9s 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, 0.2s 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, 0.7s 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, 0.3s 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...