./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-lit/jm2006_variant_true-unreach-call_true-termination.c.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-lit/jm2006_variant_true-unreach-call_true-termination.c.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b2483ed4878f440f5477fb40e4fe96958613e0f --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 10:18:40,717 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 10:18:40,720 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 10:18:40,737 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 10:18:40,738 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 10:18:40,740 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 10:18:40,742 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 10:18:40,745 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 10:18:40,747 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 10:18:40,751 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 10:18:40,753 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 10:18:40,754 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 10:18:40,755 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 10:18:40,758 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 10:18:40,765 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 10:18:40,767 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 10:18:40,768 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 10:18:40,773 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 10:18:40,775 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 10:18:40,778 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 10:18:40,781 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 10:18:40,783 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 10:18:40,787 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 10:18:40,788 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 10:18:40,789 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 10:18:40,789 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 10:18:40,790 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 10:18:40,792 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 10:18:40,794 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 10:18:40,796 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 10:18:40,797 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 10:18:40,797 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 10:18:40,798 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 10:18:40,798 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 10:18:40,798 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 10:18:40,799 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 10:18:40,799 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 10:18:40,822 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 10:18:40,823 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 10:18:40,824 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 10:18:40,825 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 10:18:40,825 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 10:18:40,825 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 10:18:40,825 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 10:18:40,826 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 10:18:40,826 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 10:18:40,827 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 10:18:40,827 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 10:18:40,828 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 10:18:40,829 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 10:18:40,829 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 10:18:40,829 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 10:18:40,830 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 10:18:40,830 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 10:18:40,830 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 10:18:40,830 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 10:18:40,830 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 10:18:40,830 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 10:18:40,830 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 10:18:40,832 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 10:18:40,833 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 10:18:40,833 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 10:18:40,833 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 10:18:40,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 10:18:40,834 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 10:18:40,834 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 10:18:40,834 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 10:18:40,834 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 10:18:40,834 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 10:18:40,835 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 10:18:40,835 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 10:18:40,835 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 -> 6b2483ed4878f440f5477fb40e4fe96958613e0f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock [2018-10-22 10:18:40,912 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 10:18:40,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 10:18:40,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 10:18:40,936 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 10:18:40,936 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 10:18:40,938 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant_true-unreach-call_true-termination.c.i [2018-10-22 10:18:40,998 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b944cf2a0/43b6201c98984ba6a9b9e4b26142c850/FLAG54d0a2add [2018-10-22 10:18:41,488 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 10:18:41,488 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant_true-unreach-call_true-termination.c.i [2018-10-22 10:18:41,495 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b944cf2a0/43b6201c98984ba6a9b9e4b26142c850/FLAG54d0a2add [2018-10-22 10:18:41,511 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b944cf2a0/43b6201c98984ba6a9b9e4b26142c850 [2018-10-22 10:18:41,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 10:18:41,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 10:18:41,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 10:18:41,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 10:18:41,526 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 10:18:41,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:18:41" (1/1) ... [2018-10-22 10:18:41,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56621c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:41, skipping insertion in model container [2018-10-22 10:18:41,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:18:41" (1/1) ... [2018-10-22 10:18:41,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 10:18:41,568 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 10:18:41,752 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 10:18:41,756 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 10:18:41,775 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 10:18:41,791 INFO L193 MainTranslator]: Completed translation [2018-10-22 10:18:41,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:41 WrapperNode [2018-10-22 10:18:41,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 10:18:41,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 10:18:41,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 10:18:41,793 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 10:18:41,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:41" (1/1) ... [2018-10-22 10:18:41,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:41" (1/1) ... [2018-10-22 10:18:41,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 10:18:41,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 10:18:41,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 10:18:41,817 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 10:18:41,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:41" (1/1) ... [2018-10-22 10:18:41,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:41" (1/1) ... [2018-10-22 10:18:41,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:41" (1/1) ... [2018-10-22 10:18:41,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:41" (1/1) ... [2018-10-22 10:18:41,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:41" (1/1) ... [2018-10-22 10:18:41,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:41" (1/1) ... [2018-10-22 10:18:41,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:41" (1/1) ... [2018-10-22 10:18:41,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 10:18:41,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 10:18:41,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 10:18:41,843 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 10:18:41,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:41" (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 10:18:42,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 10:18:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 10:18:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 10:18:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 10:18:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 10:18:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 10:18:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 10:18:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 10:18:42,337 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 10:18:42,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:18:42 BoogieIcfgContainer [2018-10-22 10:18:42,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 10:18:42,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 10:18:42,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 10:18:42,345 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 10:18:42,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 10:18:41" (1/3) ... [2018-10-22 10:18:42,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c05510b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 10:18:42, skipping insertion in model container [2018-10-22 10:18:42,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:41" (2/3) ... [2018-10-22 10:18:42,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c05510b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 10:18:42, skipping insertion in model container [2018-10-22 10:18:42,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:18:42" (3/3) ... [2018-10-22 10:18:42,351 INFO L112 eAbstractionObserver]: Analyzing ICFG jm2006_variant_true-unreach-call_true-termination.c.i [2018-10-22 10:18:42,360 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 10:18:42,370 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 10:18:42,384 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 10:18:42,419 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 10:18:42,419 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 10:18:42,420 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 10:18:42,420 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 10:18:42,420 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 10:18:42,420 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 10:18:42,420 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 10:18:42,420 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 10:18:42,421 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 10:18:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-10-22 10:18:42,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-22 10:18:42,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:18:42,447 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:18:42,449 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:18:42,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:18:42,455 INFO L82 PathProgramCache]: Analyzing trace with hash 380045771, now seen corresponding path program 1 times [2018-10-22 10:18:42,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:18:42,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:18:42,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:18:42,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:18:42,501 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:18:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:18:42,579 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 10:18:42,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 10:18:42,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 10:18:42,582 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:18:42,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 10:18:42,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 10:18:42,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 10:18:42,606 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-10-22 10:18:42,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:18:42,628 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2018-10-22 10:18:42,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 10:18:42,630 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-10-22 10:18:42,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:18:42,639 INFO L225 Difference]: With dead ends: 35 [2018-10-22 10:18:42,640 INFO L226 Difference]: Without dead ends: 15 [2018-10-22 10:18:42,644 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 10:18:42,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-22 10:18:42,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-22 10:18:42,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-22 10:18:42,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-22 10:18:42,683 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-22 10:18:42,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:18:42,683 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-22 10:18:42,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 10:18:42,684 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-22 10:18:42,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-22 10:18:42,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:18:42,685 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:18:42,685 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:18:42,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:18:42,686 INFO L82 PathProgramCache]: Analyzing trace with hash 137515447, now seen corresponding path program 1 times [2018-10-22 10:18:42,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:18:42,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:18:42,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:18:42,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:18:42,688 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:18:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:18:43,225 WARN L179 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2018-10-22 10:18:43,410 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 14 [2018-10-22 10:18:43,590 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 10:18:43,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 10:18:43,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-22 10:18:43,590 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:18:43,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-22 10:18:43,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-22 10:18:43,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-22 10:18:43,594 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 7 states. [2018-10-22 10:18:43,849 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-10-22 10:18:44,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:18:44,113 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-22 10:18:44,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 10:18:44,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-10-22 10:18:44,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:18:44,116 INFO L225 Difference]: With dead ends: 23 [2018-10-22 10:18:44,116 INFO L226 Difference]: Without dead ends: 17 [2018-10-22 10:18:44,119 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-22 10:18:44,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-22 10:18:44,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-22 10:18:44,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-22 10:18:44,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-22 10:18:44,125 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-10-22 10:18:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:18:44,126 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-22 10:18:44,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-22 10:18:44,126 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-22 10:18:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-22 10:18:44,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:18:44,127 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:18:44,127 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:18:44,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:18:44,128 INFO L82 PathProgramCache]: Analyzing trace with hash -431115791, now seen corresponding path program 1 times [2018-10-22 10:18:44,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:18:44,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:18:44,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:18:44,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:18:44,130 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:18:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:18:44,469 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-10-22 10:18:44,703 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-10-22 10:18:44,731 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 10:18:44,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:18:44,732 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 10:18:44,733 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-10-22 10:18:44,736 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [22], [28], [35], [38], [40], [46], [47], [48], [50] [2018-10-22 10:18:44,791 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 10:18:44,791 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 10:18:45,296 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-22 10:18:45,298 INFO L272 AbstractInterpreter]: Visited 15 different actions 133 times. Merged at 4 different actions 60 times. Widened at 1 different actions 11 times. Found 1 fixpoints after 1 different actions. Largest state had 9 variables. [2018-10-22 10:18:45,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:18:45,313 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-22 10:18:45,313 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:18:45,313 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 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 10:18:45,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:18:45,325 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-22 10:18:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:18:45,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 10:18:45,523 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 10:18:45,524 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 10:18:45,701 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 10:18:45,725 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:18:45,725 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-22 10:18:45,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:18:45,747 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-22 10:18:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:18:45,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 10:18:45,820 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 10:18:45,820 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 10:18:45,871 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 10:18:45,873 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-22 10:18:45,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 17 [2018-10-22 10:18:45,873 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-22 10:18:45,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-22 10:18:45,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-22 10:18:45,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2018-10-22 10:18:45,875 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 12 states. [2018-10-22 10:18:46,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:18:46,110 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-22 10:18:46,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-22 10:18:46,115 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2018-10-22 10:18:46,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:18:46,116 INFO L225 Difference]: With dead ends: 25 [2018-10-22 10:18:46,116 INFO L226 Difference]: Without dead ends: 19 [2018-10-22 10:18:46,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-10-22 10:18:46,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-22 10:18:46,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-22 10:18:46,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-22 10:18:46,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-22 10:18:46,125 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-10-22 10:18:46,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:18:46,125 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-22 10:18:46,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-22 10:18:46,126 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-22 10:18:46,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-22 10:18:46,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:18:46,127 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:18:46,127 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:18:46,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:18:46,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1424888917, now seen corresponding path program 2 times [2018-10-22 10:18:46,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:18:46,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:18:46,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:18:46,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:18:46,129 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:18:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:18:46,454 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 10:18:46,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:18:46,454 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 10:18:46,455 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-22 10:18:46,455 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-22 10:18:46,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:18:46,455 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 10:18:46,463 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 10:18:46,463 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-10-22 10:18:46,478 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 10:18:46,478 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 10:18:46,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 10:18:46,630 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 10:18:46,631 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 10:18:46,769 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 10:18:46,789 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:18:46,789 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-22 10:18:46,806 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 10:18:46,806 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-10-22 10:18:46,830 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 10:18:46,830 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 10:18:46,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 10:18:46,954 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 10:18:46,954 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 10:18:46,992 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 10:18:46,994 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-22 10:18:46,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 20 [2018-10-22 10:18:46,995 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-22 10:18:46,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-22 10:18:46,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-22 10:18:46,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-10-22 10:18:46,997 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 14 states. [2018-10-22 10:18:47,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:18:47,237 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-10-22 10:18:47,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-22 10:18:47,238 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18 [2018-10-22 10:18:47,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:18:47,239 INFO L225 Difference]: With dead ends: 31 [2018-10-22 10:18:47,239 INFO L226 Difference]: Without dead ends: 23 [2018-10-22 10:18:47,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2018-10-22 10:18:47,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-22 10:18:47,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-22 10:18:47,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-22 10:18:47,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-22 10:18:47,245 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-10-22 10:18:47,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:18:47,246 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-22 10:18:47,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-22 10:18:47,246 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-22 10:18:47,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-22 10:18:47,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:18:47,247 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:18:47,247 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:18:47,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:18:47,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1072393119, now seen corresponding path program 3 times [2018-10-22 10:18:47,248 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:18:47,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:18:47,249 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 10:18:47,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:18:47,249 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:18:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:18:47,660 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-22 10:18:47,661 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:18:47,661 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 10:18:47,661 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-22 10:18:47,661 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-22 10:18:47,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:18:47,662 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 10:18:47,680 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-22 10:18:47,681 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-22 10:18:47,730 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-22 10:18:47,730 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 10:18:47,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 10:18:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 10:18:48,099 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 10:18:48,340 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 10:18:48,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:18:48,364 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-22 10:18:48,380 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-22 10:18:48,380 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-22 10:18:48,420 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-22 10:18:48,420 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 10:18:48,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 10:18:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 10:18:48,463 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 10:18:48,528 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 10:18:48,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-22 10:18:48,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11, 11, 11] total 25 [2018-10-22 10:18:48,532 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-22 10:18:48,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-22 10:18:48,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-22 10:18:48,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2018-10-22 10:18:48,534 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 17 states. [2018-10-22 10:18:48,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:18:48,815 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-10-22 10:18:48,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-22 10:18:48,816 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 22 [2018-10-22 10:18:48,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:18:48,816 INFO L225 Difference]: With dead ends: 27 [2018-10-22 10:18:48,817 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 10:18:48,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2018-10-22 10:18:48,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 10:18:48,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 10:18:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 10:18:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 10:18:48,819 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-10-22 10:18:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:18:48,819 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 10:18:48,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-22 10:18:48,819 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 10:18:48,819 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 10:18:48,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 10:18:48,972 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 10:18:48,973 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 10:18:48,973 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 10:18:48,973 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 10:18:48,973 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 10:18:48,973 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 10:18:48,973 INFO L421 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 main_~z~0))) (and (<= .cse0 0) (<= 0 .cse0))) [2018-10-22 10:18:48,973 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 28) no Hoare annotation was computed. [2018-10-22 10:18:48,973 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 23) no Hoare annotation was computed. [2018-10-22 10:18:48,974 INFO L421 ceAbstractionStarter]: At program point L19-3(lines 19 23) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0 main_~z~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-10-22 10:18:48,974 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-22 10:18:48,974 INFO L425 ceAbstractionStarter]: For program point L19-4(lines 10 28) no Hoare annotation was computed. [2018-10-22 10:18:48,974 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 28) no Hoare annotation was computed. [2018-10-22 10:18:48,974 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 28) the Hoare annotation is: true [2018-10-22 10:18:48,974 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2018-10-22 10:18:48,974 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-22 10:18:48,974 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 10:18:48,975 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 10:18:48,975 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 10:18:48,975 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 10:18:48,975 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 10:18:48,975 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 10:18:48,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 10:18:48 BoogieIcfgContainer [2018-10-22 10:18:48,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 10:18:48,988 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 10:18:48,988 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 10:18:48,988 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 10:18:48,989 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:18:42" (3/4) ... [2018-10-22 10:18:48,992 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-22 10:18:48,998 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-22 10:18:48,998 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-22 10:18:48,998 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-22 10:18:49,003 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-10-22 10:18:49,004 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-10-22 10:18:49,004 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-22 10:18:49,062 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 10:18:49,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 10:18:49,064 INFO L168 Benchmark]: Toolchain (without parser) took 7545.77 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 222.3 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -135.3 MB). Peak memory consumption was 87.0 MB. Max. memory is 11.5 GB. [2018-10-22 10:18:49,065 INFO L168 Benchmark]: CDTParser took 0.28 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 10:18:49,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.96 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-22 10:18:49,066 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.26 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 10:18:49,068 INFO L168 Benchmark]: Boogie Preprocessor took 25.55 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 10:18:49,068 INFO L168 Benchmark]: RCFGBuilder took 495.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-10-22 10:18:49,069 INFO L168 Benchmark]: TraceAbstraction took 6648.50 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.8 MB). Peak memory consumption was 103.9 MB. Max. memory is 11.5 GB. [2018-10-22 10:18:49,071 INFO L168 Benchmark]: Witness Printer took 74.75 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. [2018-10-22 10:18:49,076 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 271.96 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.26 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.55 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 495.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6648.50 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.8 MB). Peak memory consumption was 103.9 MB. Max. memory is 11.5 GB. * Witness Printer took 74.75 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: x + j <= i + y + z && i + y + z <= x + j - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 6.5s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 25 SDslu, 309 SDs, 0 SdLazy, 266 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 272 GetRequests, 182 SyntacticMatches, 14 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.5s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 33 HoareAnnotationTreeSize, 13 FomulaSimplifications, 55 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 192 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 195 NumberOfCodeBlocks, 195 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 290 ConstructedInterpolants, 0 QuantifiedInterpolants, 44465 SizeOfPredicates, 42 NumberOfNonLiveVariables, 358 ConjunctsInSsa, 180 ConjunctsInUnsatCore, 17 InterpolantComputations, 2 PerfectInterpolantSequences, 2/140 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...