./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call_true-termination.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-new/gauss_sum_true-unreach-call_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 a235c453e8d82f15e0f227470cffc0947c40dcd4 --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 10:19:05,874 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 10:19:05,876 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 10:19:05,892 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 10:19:05,893 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 10:19:05,897 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 10:19:05,899 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 10:19:05,901 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 10:19:05,902 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 10:19:05,904 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 10:19:05,905 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 10:19:05,905 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 10:19:05,907 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 10:19:05,908 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 10:19:05,917 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 10:19:05,918 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 10:19:05,919 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 10:19:05,923 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 10:19:05,928 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 10:19:05,929 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 10:19:05,933 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 10:19:05,936 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 10:19:05,940 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 10:19:05,941 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 10:19:05,942 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 10:19:05,943 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 10:19:05,945 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 10:19:05,946 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 10:19:05,946 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 10:19:05,948 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 10:19:05,952 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 10:19:05,953 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 10:19:05,953 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 10:19:05,953 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 10:19:05,954 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 10:19:05,958 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 10:19:05,958 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 10:19:05,980 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 10:19:05,980 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 10:19:05,981 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 10:19:05,981 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 10:19:05,981 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 10:19:05,981 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 10:19:05,981 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 10:19:05,982 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 10:19:05,983 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 10:19:05,983 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 10:19:05,983 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 10:19:05,984 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 10:19:05,984 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 10:19:05,984 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 10:19:05,985 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 10:19:05,985 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 10:19:05,985 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 10:19:05,985 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 10:19:05,985 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 10:19:05,985 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 10:19:05,986 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 10:19:05,986 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 10:19:05,986 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 10:19:05,986 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 10:19:05,986 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 10:19:05,987 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 10:19:05,988 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 10:19:05,988 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 10:19:05,989 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 10:19:05,989 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 10:19:05,989 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 10:19:05,989 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 10:19:05,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 10:19:05,990 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 10:19:05,990 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 -> a235c453e8d82f15e0f227470cffc0947c40dcd4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock [2018-10-22 10:19:06,040 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 10:19:06,052 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 10:19:06,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 10:19:06,058 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 10:19:06,059 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 10:19:06,059 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call_true-termination.i [2018-10-22 10:19:06,130 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/020f387db/9717dff692e340fbb05eb0daf829a831/FLAG731623fab [2018-10-22 10:19:06,583 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 10:19:06,584 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call_true-termination.i [2018-10-22 10:19:06,591 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/020f387db/9717dff692e340fbb05eb0daf829a831/FLAG731623fab [2018-10-22 10:19:06,607 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/020f387db/9717dff692e340fbb05eb0daf829a831 [2018-10-22 10:19:06,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 10:19:06,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 10:19:06,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 10:19:06,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 10:19:06,618 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 10:19:06,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:19:06" (1/1) ... [2018-10-22 10:19:06,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c18bd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:19:06, skipping insertion in model container [2018-10-22 10:19:06,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:19:06" (1/1) ... [2018-10-22 10:19:06,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 10:19:06,653 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 10:19:06,822 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 10:19:06,826 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 10:19:06,846 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 10:19:06,863 INFO L193 MainTranslator]: Completed translation [2018-10-22 10:19:06,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:19:06 WrapperNode [2018-10-22 10:19:06,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 10:19:06,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 10:19:06,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 10:19:06,866 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 10:19:06,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:19:06" (1/1) ... [2018-10-22 10:19:06,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:19:06" (1/1) ... [2018-10-22 10:19:06,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 10:19:06,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 10:19:06,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 10:19:06,891 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 10:19:06,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:19:06" (1/1) ... [2018-10-22 10:19:06,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:19:06" (1/1) ... [2018-10-22 10:19:06,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:19:06" (1/1) ... [2018-10-22 10:19:06,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:19:06" (1/1) ... [2018-10-22 10:19:06,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:19:06" (1/1) ... [2018-10-22 10:19:06,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:19:06" (1/1) ... [2018-10-22 10:19:06,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:19:06" (1/1) ... [2018-10-22 10:19:06,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 10:19:06,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 10:19:06,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 10:19:06,919 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 10:19:06,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:19:06" (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 10:19:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 10:19:06,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 10:19:06,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 10:19:06,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 10:19:06,998 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 10:19:06,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 10:19:06,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 10:19:06,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 10:19:07,483 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 10:19:07,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:19:07 BoogieIcfgContainer [2018-10-22 10:19:07,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 10:19:07,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 10:19:07,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 10:19:07,500 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 10:19:07,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 10:19:06" (1/3) ... [2018-10-22 10:19:07,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa4a84e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 10:19:07, skipping insertion in model container [2018-10-22 10:19:07,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:19:06" (2/3) ... [2018-10-22 10:19:07,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa4a84e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 10:19:07, skipping insertion in model container [2018-10-22 10:19:07,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:19:07" (3/3) ... [2018-10-22 10:19:07,508 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call_true-termination.i [2018-10-22 10:19:07,521 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 10:19:07,529 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 10:19:07,549 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 10:19:07,596 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 10:19:07,597 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 10:19:07,597 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 10:19:07,597 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 10:19:07,598 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 10:19:07,598 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 10:19:07,598 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 10:19:07,598 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 10:19:07,598 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 10:19:07,617 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-10-22 10:19:07,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-22 10:19:07,623 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:19:07,624 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:19:07,627 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:19:07,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:19:07,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1152414567, now seen corresponding path program 1 times [2018-10-22 10:19:07,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:19:07,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:19:07,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:19:07,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:19:07,680 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:19:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:19:07,745 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 10:19:07,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 10:19:07,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 10:19:07,748 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:19:07,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 10:19:07,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 10:19:07,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 10:19:07,773 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-10-22 10:19:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:19:07,799 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-10-22 10:19:07,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 10:19:07,801 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-10-22 10:19:07,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:19:07,816 INFO L225 Difference]: With dead ends: 32 [2018-10-22 10:19:07,817 INFO L226 Difference]: Without dead ends: 13 [2018-10-22 10:19:07,821 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 10:19:07,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-22 10:19:07,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-22 10:19:07,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-22 10:19:07,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-22 10:19:07,872 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-22 10:19:07,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:19:07,873 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-22 10:19:07,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 10:19:07,873 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-22 10:19:07,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-22 10:19:07,874 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:19:07,874 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:19:07,876 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:19:07,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:19:07,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1083883255, now seen corresponding path program 1 times [2018-10-22 10:19:07,877 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:19:07,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:19:07,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:19:07,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:19:07,880 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:19:07,888 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-22 10:19:07,888 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-22 10:19:07,888 INFO L174 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-22 10:19:07,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:19:07,903 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-22 10:19:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:19:07,941 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-10-22 10:19:07,943 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-22 10:19:07,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:19:07,943 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 10:19:07,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:19:07,953 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-22 10:19:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:19:07,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 10:19:08,065 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 10:19:08,066 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 10:19:08,101 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 10:19:08,124 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-10-22 10:19:08,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-10-22 10:19:08,124 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:19:08,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-22 10:19:08,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-22 10:19:08,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-22 10:19:08,127 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2018-10-22 10:19:08,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:19:08,168 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-22 10:19:08,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-22 10:19:08,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-10-22 10:19:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:19:08,170 INFO L225 Difference]: With dead ends: 20 [2018-10-22 10:19:08,170 INFO L226 Difference]: Without dead ends: 15 [2018-10-22 10:19:08,171 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-22 10:19:08,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-22 10:19:08,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-22 10:19:08,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-22 10:19:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-22 10:19:08,176 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-10-22 10:19:08,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:19:08,177 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-22 10:19:08,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-22 10:19:08,178 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-22 10:19:08,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-22 10:19:08,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:19:08,179 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:19:08,180 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:19:08,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:19:08,180 INFO L82 PathProgramCache]: Analyzing trace with hash 469971222, now seen corresponding path program 1 times [2018-10-22 10:19:08,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:19:08,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:19:08,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:19:08,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:19:08,182 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:19:08,192 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-22 10:19:08,193 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-22 10:19:08,193 INFO L174 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-22 10:19:08,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:19:08,211 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-22 10:19:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:19:08,257 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-10-22 10:19:08,259 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [15], [26], [29], [31], [37], [38], [39], [41], [43] [2018-10-22 10:19:08,305 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 10:19:08,305 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 10:19:08,733 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-22 10:19:08,734 INFO L272 AbstractInterpreter]: Visited 13 different actions 84 times. Merged at 3 different actions 32 times. Widened at 1 different actions 7 times. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-10-22 10:19:08,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:19:08,755 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-22 10:19:08,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:19:08,755 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 10:19:08,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:19:08,764 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-22 10:19:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:19:08,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 10:19:09,010 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 10:19:09,016 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 10:19:09,531 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 10:19:09,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:19:09,552 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-22 10:19:09,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:19:09,568 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-22 10:19:09,588 ERROR L235 seRefinementStrategy]: Caught known exception: A non-linear fact was asserted to arithmetic in a linear logic. [2018-10-22 10:19:09,588 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 10:19:09,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-10-22 10:19:09,588 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-22 10:19:09,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-22 10:19:09,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-22 10:19:09,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-10-22 10:19:09,590 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 12 states. [2018-10-22 10:19:09,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:19:09,944 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-22 10:19:09,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 10:19:09,946 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2018-10-22 10:19:09,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:19:09,948 INFO L225 Difference]: With dead ends: 22 [2018-10-22 10:19:09,948 INFO L226 Difference]: Without dead ends: 17 [2018-10-22 10:19:09,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-22 10:19:09,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-22 10:19:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-22 10:19:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-22 10:19:09,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-22 10:19:09,954 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-10-22 10:19:09,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:19:09,955 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-22 10:19:09,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-22 10:19:09,955 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-22 10:19:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-22 10:19:09,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:19:09,956 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:19:09,956 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:19:09,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:19:09,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1088972939, now seen corresponding path program 2 times [2018-10-22 10:19:09,957 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:19:09,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:19:09,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:19:09,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:19:09,958 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:19:09,966 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-22 10:19:09,966 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-22 10:19:09,966 INFO L174 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-22 10:19:09,978 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 10:19:09,978 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-22 10:19:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:19:10,011 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-22 10:19:10,012 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-22 10:19:10,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:19:10,012 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 10:19:10,020 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 10:19:10,021 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-10-22 10:19:10,034 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 10:19:10,034 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 10:19:10,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 10:19:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 10:19:10,146 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 10:19:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-22 10:19:13,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:19:13,743 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-22 10:19:13,762 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 10:19:13,762 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-10-22 10:19:13,773 ERROR L235 seRefinementStrategy]: Caught known exception: A non-linear fact was asserted to arithmetic in a linear logic. [2018-10-22 10:19:13,774 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 10:19:13,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2018-10-22 10:19:13,774 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-22 10:19:13,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-22 10:19:13,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-22 10:19:13,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=124, Unknown=1, NotChecked=0, Total=156 [2018-10-22 10:19:13,777 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 13 states. [2018-10-22 10:19:14,080 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~n~0 Int)) (or (= (+ (* 2 c_main_~i~0) (* 2 c_main_~sum~0)) (* (+ main_~n~0 1) main_~n~0)) (< c_main_~i~0 main_~n~0) (< main_~n~0 c_main_~i~0))) (or (<= c_main_~i~0 c_main_~n~0) (= (* 2 c_main_~sum~0) (* (+ c_main_~n~0 1) c_main_~n~0)))) is different from true [2018-10-22 10:19:14,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:19:14,241 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-10-22 10:19:14,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-22 10:19:14,246 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2018-10-22 10:19:14,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:19:14,247 INFO L225 Difference]: With dead ends: 20 [2018-10-22 10:19:14,247 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 10:19:14,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=62, Invalid=246, Unknown=2, NotChecked=32, Total=342 [2018-10-22 10:19:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 10:19:14,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 10:19:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 10:19:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 10:19:14,249 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-10-22 10:19:14,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:19:14,249 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 10:19:14,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-22 10:19:14,249 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 10:19:14,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 10:19:14,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 10:19:16,441 WARN L179 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 34 DAG size of output: 19 [2018-10-22 10:19:16,490 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 10:19:16,490 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 10:19:16,490 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 10:19:16,490 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 10:19:16,490 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 10:19:16,491 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 10:19:16,491 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2018-10-22 10:19:16,491 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2018-10-22 10:19:16,491 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-10-22 10:19:16,491 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 17) no Hoare annotation was computed. [2018-10-22 10:19:16,491 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-10-22 10:19:16,491 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2018-10-22 10:19:16,492 INFO L425 ceAbstractionStarter]: For program point L15-3(lines 15 17) no Hoare annotation was computed. [2018-10-22 10:19:16,492 INFO L421 ceAbstractionStarter]: At program point L15-4(lines 15 17) the Hoare annotation is: (and (forall ((main_~n~0 Int)) (or (= (+ (* 2 main_~i~0) (* 2 main_~sum~0)) (* (+ main_~n~0 1) main_~n~0)) (< main_~i~0 main_~n~0) (< main_~n~0 main_~i~0))) (or (<= main_~i~0 main_~n~0) (= (* 2 main_~sum~0) (* (+ main_~n~0 1) main_~n~0)))) [2018-10-22 10:19:16,492 INFO L421 ceAbstractionStarter]: At program point L15-5(lines 15 17) the Hoare annotation is: (= (* 2 main_~sum~0) (* (+ main_~n~0 1) main_~n~0)) [2018-10-22 10:19:16,492 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 10:19:16,492 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 10:19:16,492 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 10:19:16,493 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 10:19:16,494 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 10:19:16,494 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 10:19:16,500 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-10-22 10:19:16,502 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-10-22 10:19:16,502 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-10-22 10:19:16,503 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-10-22 10:19:16,509 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-10-22 10:19:16,509 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-10-22 10:19:16,509 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-10-22 10:19:16,510 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-10-22 10:19:16,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 10:19:16 BoogieIcfgContainer [2018-10-22 10:19:16,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 10:19:16,513 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 10:19:16,513 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 10:19:16,513 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 10:19:16,513 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:19:07" (3/4) ... [2018-10-22 10:19:16,518 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-22 10:19:16,524 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-22 10:19:16,525 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-22 10:19:16,525 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-22 10:19:16,531 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-10-22 10:19:16,531 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-10-22 10:19:16,531 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-22 10:19:16,583 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 10:19:16,583 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 10:19:16,584 INFO L168 Benchmark]: Toolchain (without parser) took 9972.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.5 MB in the beginning and 945.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 153.3 MB. Max. memory is 11.5 GB. [2018-10-22 10:19:16,585 INFO L168 Benchmark]: CDTParser took 0.20 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 10:19:16,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.64 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-22 10:19:16,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.53 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 10:19:16,587 INFO L168 Benchmark]: Boogie Preprocessor took 27.17 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 10:19:16,587 INFO L168 Benchmark]: RCFGBuilder took 565.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -190.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-10-22 10:19:16,589 INFO L168 Benchmark]: TraceAbstraction took 9026.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 945.6 MB in the end (delta: 184.6 MB). Peak memory consumption was 184.6 MB. Max. memory is 11.5 GB. [2018-10-22 10:19:16,590 INFO L168 Benchmark]: Witness Printer took 70.66 ms. Allocated memory is still 1.2 GB. Free memory is still 945.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 10:19:16,594 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 250.64 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 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 25.53 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.17 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 565.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -190.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9026.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 945.6 MB in the end (delta: 184.6 MB). Peak memory consumption was 184.6 MB. Max. memory is 11.5 GB. * Witness Printer took 70.66 ms. Allocated memory is still 1.2 GB. Free memory is still 945.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant [2018-10-22 10:19:16,603 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-10-22 10:19:16,603 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-10-22 10:19:16,603 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-10-22 10:19:16,603 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-10-22 10:19:16,609 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-10-22 10:19:16,610 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-10-22 10:19:16,610 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-10-22 10:19:16,610 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] Derived loop invariant: (forall main_~n~0 : int :: (2 * i + 2 * sum == (main_~n~0 + 1) * main_~n~0 || i < main_~n~0) || main_~n~0 < i) && (i <= n || 2 * sum == (n + 1) * n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 8.9s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 2.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 6 SDslu, 143 SDs, 0 SdLazy, 88 SolverSat, 3 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 49 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 126 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 88 ConstructedInterpolants, 4 QuantifiedInterpolants, 5448 SizeOfPredicates, 11 NumberOfNonLiveVariables, 111 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 2/16 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...