./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loops/for_bounded_loop1_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0210da8c Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i ../../../trunk/examples/svcomp/loops/for_bounded_loop1_false-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 0ab550a6e9aa370752671d7ad69781384c889e75 ......................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-0210da8 [2018-10-21 12:24:29,643 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-21 12:24:29,645 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-21 12:24:29,657 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-21 12:24:29,658 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-21 12:24:29,659 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-21 12:24:29,661 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-21 12:24:29,664 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-21 12:24:29,666 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-21 12:24:29,667 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-21 12:24:29,668 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-21 12:24:29,669 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-21 12:24:29,671 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-21 12:24:29,672 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-21 12:24:29,673 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-21 12:24:29,677 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-21 12:24:29,678 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-21 12:24:29,680 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-21 12:24:29,688 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-21 12:24:29,689 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-21 12:24:29,692 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-21 12:24:29,696 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-21 12:24:29,701 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-21 12:24:29,701 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-21 12:24:29,701 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-21 12:24:29,702 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-21 12:24:29,704 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-21 12:24:29,706 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-21 12:24:29,707 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-21 12:24:29,710 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-21 12:24:29,711 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-21 12:24:29,712 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-21 12:24:29,712 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-21 12:24:29,713 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-21 12:24:29,716 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-21 12:24:29,718 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-21 12:24:29,720 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-21 12:24:29,749 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-21 12:24:29,751 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-21 12:24:29,752 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-21 12:24:29,756 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-21 12:24:29,756 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-21 12:24:29,756 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-21 12:24:29,757 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-21 12:24:29,757 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-21 12:24:29,757 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-21 12:24:29,757 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-21 12:24:29,757 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-21 12:24:29,758 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-21 12:24:29,758 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-21 12:24:29,760 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-21 12:24:29,760 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-21 12:24:29,760 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-21 12:24:29,760 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-21 12:24:29,761 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-21 12:24:29,761 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-21 12:24:29,761 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-21 12:24:29,761 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-21 12:24:29,761 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-21 12:24:29,762 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-21 12:24:29,763 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-21 12:24:29,763 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-21 12:24:29,763 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-21 12:24:29,763 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-21 12:24:29,764 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-21 12:24:29,764 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-21 12:24:29,764 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-21 12:24:29,764 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-21 12:24:29,764 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-21 12:24:29,765 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-21 12:24:29,765 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-21 12:24:29,765 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 -> 0ab550a6e9aa370752671d7ad69781384c889e75 [2018-10-21 12:24:29,856 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-21 12:24:29,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-21 12:24:29,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-21 12:24:29,876 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-21 12:24:29,876 INFO L276 PluginConnector]: CDTParser initialized [2018-10-21 12:24:29,877 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1_false-unreach-call_true-termination.i [2018-10-21 12:24:29,937 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d4ccacba3/4c5607beedf74fa68ac6bb506b871c39/FLAGad3628754 [2018-10-21 12:24:30,373 INFO L298 CDTParser]: Found 1 translation units. [2018-10-21 12:24:30,374 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1_false-unreach-call_true-termination.i [2018-10-21 12:24:30,380 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d4ccacba3/4c5607beedf74fa68ac6bb506b871c39/FLAGad3628754 [2018-10-21 12:24:30,394 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d4ccacba3/4c5607beedf74fa68ac6bb506b871c39 [2018-10-21 12:24:30,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-21 12:24:30,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-21 12:24:30,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-21 12:24:30,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-21 12:24:30,406 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-21 12:24:30,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 12:24:30" (1/1) ... [2018-10-21 12:24:30,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48355465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:30, skipping insertion in model container [2018-10-21 12:24:30,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 12:24:30" (1/1) ... [2018-10-21 12:24:30,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-21 12:24:30,444 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-21 12:24:30,631 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-21 12:24:30,635 INFO L189 MainTranslator]: Completed pre-run [2018-10-21 12:24:30,660 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-21 12:24:30,680 INFO L193 MainTranslator]: Completed translation [2018-10-21 12:24:30,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:30 WrapperNode [2018-10-21 12:24:30,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-21 12:24:30,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-21 12:24:30,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-21 12:24:30,682 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-21 12:24:30,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:30" (1/1) ... [2018-10-21 12:24:30,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:30" (1/1) ... [2018-10-21 12:24:30,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-21 12:24:30,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-21 12:24:30,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-21 12:24:30,707 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-21 12:24:30,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:30" (1/1) ... [2018-10-21 12:24:30,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:30" (1/1) ... [2018-10-21 12:24:30,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:30" (1/1) ... [2018-10-21 12:24:30,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:30" (1/1) ... [2018-10-21 12:24:30,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:30" (1/1) ... [2018-10-21 12:24:30,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:30" (1/1) ... [2018-10-21 12:24:30,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:30" (1/1) ... [2018-10-21 12:24:30,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-21 12:24:30,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-21 12:24:30,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-21 12:24:30,739 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-21 12:24:30,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-21 12:24:30,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-21 12:24:30,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-21 12:24:30,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-21 12:24:30,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-21 12:24:30,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-21 12:24:30,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-21 12:24:30,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-21 12:24:30,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-21 12:24:31,235 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-21 12:24:31,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:24:31 BoogieIcfgContainer [2018-10-21 12:24:31,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-21 12:24:31,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-21 12:24:31,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-21 12:24:31,246 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-21 12:24:31,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 12:24:30" (1/3) ... [2018-10-21 12:24:31,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40755a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 12:24:31, skipping insertion in model container [2018-10-21 12:24:31,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:24:30" (2/3) ... [2018-10-21 12:24:31,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40755a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 12:24:31, skipping insertion in model container [2018-10-21 12:24:31,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:24:31" (3/3) ... [2018-10-21 12:24:31,251 INFO L112 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1_false-unreach-call_true-termination.i [2018-10-21 12:24:31,268 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-21 12:24:31,277 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-21 12:24:31,297 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-21 12:24:31,343 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-21 12:24:31,344 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-21 12:24:31,344 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-21 12:24:31,344 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-21 12:24:31,345 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-21 12:24:31,345 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-21 12:24:31,345 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-21 12:24:31,346 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-21 12:24:31,346 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-21 12:24:31,367 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-10-21 12:24:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-21 12:24:31,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:24:31,376 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:24:31,378 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:24:31,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:24:31,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1420455248, now seen corresponding path program 1 times [2018-10-21 12:24:31,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:24:31,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:24:31,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:24:31,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:24:31,430 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:24:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:24:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:24:31,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-21 12:24:31,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-21 12:24:31,497 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:24:31,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-21 12:24:31,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-21 12:24:31,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-21 12:24:31,518 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2018-10-21 12:24:31,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:24:31,545 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2018-10-21 12:24:31,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-21 12:24:31,546 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-10-21 12:24:31,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:24:31,555 INFO L225 Difference]: With dead ends: 42 [2018-10-21 12:24:31,555 INFO L226 Difference]: Without dead ends: 20 [2018-10-21 12:24:31,559 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-21 12:24:31,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-21 12:24:31,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-21 12:24:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-21 12:24:31,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-21 12:24:31,605 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2018-10-21 12:24:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:24:31,605 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-21 12:24:31,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-21 12:24:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-21 12:24:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-21 12:24:31,607 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:24:31,607 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:24:31,608 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:24:31,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:24:31,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1573461901, now seen corresponding path program 1 times [2018-10-21 12:24:31,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:24:31,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:24:31,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:24:31,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:24:31,611 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:24:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:24:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:24:32,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-21 12:24:32,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-21 12:24:32,020 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:24:32,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-21 12:24:32,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-21 12:24:32,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-21 12:24:32,023 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2018-10-21 12:24:32,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:24:32,252 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-10-21 12:24:32,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-21 12:24:32,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-10-21 12:24:32,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:24:32,254 INFO L225 Difference]: With dead ends: 31 [2018-10-21 12:24:32,254 INFO L226 Difference]: Without dead ends: 28 [2018-10-21 12:24:32,256 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-21 12:24:32,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-21 12:24:32,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-10-21 12:24:32,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-21 12:24:32,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-10-21 12:24:32,266 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 12 [2018-10-21 12:24:32,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:24:32,266 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-10-21 12:24:32,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-21 12:24:32,267 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-10-21 12:24:32,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-21 12:24:32,268 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:24:32,268 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:24:32,268 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:24:32,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:24:32,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1075995346, now seen corresponding path program 1 times [2018-10-21 12:24:32,269 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:24:32,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:24:32,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:24:32,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:24:32,270 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:24:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:24:32,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:24:32,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:24:32,704 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-21 12:24:32,705 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-10-21 12:24:32,707 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [17], [19], [23], [32], [35], [37], [40], [42], [43], [44], [45], [47], [48], [49] [2018-10-21 12:24:32,756 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-21 12:24:32,756 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-21 12:24:32,950 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-21 12:24:32,952 INFO L272 AbstractInterpreter]: Visited 17 different actions 21 times. Never merged. Never widened. Never found a fixpoint. Largest state had 6 variables. [2018-10-21 12:24:32,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:24:32,960 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-21 12:24:33,102 INFO L232 lantSequenceWeakener]: Weakened 9 states. On average, predicates are now at 66.67% of their original sizes. [2018-10-21 12:24:33,102 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-21 12:24:33,486 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-21 12:24:33,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-21 12:24:33,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2018-10-21 12:24:33,488 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:24:33,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-21 12:24:33,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-21 12:24:33,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-21 12:24:33,489 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2018-10-21 12:24:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:24:34,144 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-10-21 12:24:34,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-21 12:24:34,144 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-10-21 12:24:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:24:34,145 INFO L225 Difference]: With dead ends: 44 [2018-10-21 12:24:34,145 INFO L226 Difference]: Without dead ends: 42 [2018-10-21 12:24:34,146 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-21 12:24:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-21 12:24:34,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2018-10-21 12:24:34,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-21 12:24:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2018-10-21 12:24:34,158 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 19 [2018-10-21 12:24:34,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:24:34,159 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2018-10-21 12:24:34,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-21 12:24:34,159 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2018-10-21 12:24:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-21 12:24:34,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:24:34,160 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:24:34,161 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:24:34,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:24:34,161 INFO L82 PathProgramCache]: Analyzing trace with hash 977980684, now seen corresponding path program 1 times [2018-10-21 12:24:34,161 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:24:34,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:24:34,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:24:34,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:24:34,163 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:24:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-21 12:24:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-21 12:24:34,215 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-21 12:24:34,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 12:24:34 BoogieIcfgContainer [2018-10-21 12:24:34,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-21 12:24:34,241 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-21 12:24:34,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-21 12:24:34,241 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-21 12:24:34,243 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:24:31" (3/4) ... [2018-10-21 12:24:34,245 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-21 12:24:34,292 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-21 12:24:34,292 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-21 12:24:34,293 INFO L168 Benchmark]: Toolchain (without parser) took 3893.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 954.5 MB in the beginning and 1.0 GB in the end (delta: -46.3 MB). Peak memory consumption was 89.5 MB. Max. memory is 11.5 GB. [2018-10-21 12:24:34,295 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. [2018-10-21 12:24:34,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.83 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-21 12:24:34,296 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.81 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:24:34,297 INFO L168 Benchmark]: Boogie Preprocessor took 31.41 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:24:34,297 INFO L168 Benchmark]: RCFGBuilder took 497.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2018-10-21 12:24:34,298 INFO L168 Benchmark]: TraceAbstraction took 3002.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 106.4 MB). Peak memory consumption was 106.4 MB. Max. memory is 11.5 GB. [2018-10-21 12:24:34,299 INFO L168 Benchmark]: Witness Printer took 51.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:24:34,303 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 278.83 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.81 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.41 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 497.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3002.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 106.4 MB). Peak memory consumption was 106.4 MB. Max. memory is 11.5 GB. * Witness Printer took 51.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int i=0, x=0, y=0; [L15] int n=__VERIFIER_nondet_int(); [L16] COND FALSE !(!(n>0)) [L17] i=0 VAL [i=0, n=1, x=0, y=0] [L17] COND TRUE i