./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/terminator_02-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b7561356-18fe-4822-bede-be8a8f1f160e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b7561356-18fe-4822-bede-be8a8f1f160e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b7561356-18fe-4822-bede-be8a8f1f160e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b7561356-18fe-4822-bede-be8a8f1f160e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/terminator_02-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b7561356-18fe-4822-bede-be8a8f1f160e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b7561356-18fe-4822-bede-be8a8f1f160e/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a06ba721ade3e36e091d6046e7f548a6b0c91e10 ................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:00:37,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:00:37,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:00:37,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:00:37,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:00:37,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:00:37,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:00:37,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:00:37,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:00:37,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:00:37,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:00:37,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:00:37,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:00:37,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:00:37,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:00:37,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:00:37,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:00:37,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:00:37,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:00:37,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:00:37,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:00:37,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:00:37,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:00:37,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:00:37,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:00:37,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:00:37,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:00:37,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:00:37,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:00:37,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:00:37,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:00:37,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:00:37,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:00:37,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:00:37,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:00:37,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:00:37,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:00:37,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:00:37,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:00:37,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:00:37,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:00:37,730 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b7561356-18fe-4822-bede-be8a8f1f160e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:00:37,745 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:00:37,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:00:37,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:00:37,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:00:37,751 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:00:37,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:00:37,751 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:00:37,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:00:37,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:00:37,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:00:37,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:00:37,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:00:37,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:00:37,752 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:00:37,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:00:37,753 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:00:37,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:00:37,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:00:37,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:00:37,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:00:37,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:00:37,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:00:37,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:00:37,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:00:37,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:00:37,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:00:37,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:00:37,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:00:37,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_b7561356-18fe-4822-bede-be8a8f1f160e/bin/uautomizer 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 -> Automizer 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 -> a06ba721ade3e36e091d6046e7f548a6b0c91e10 [2019-10-22 09:00:37,786 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:00:37,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:00:37,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:00:37,805 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:00:37,805 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:00:37,806 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b7561356-18fe-4822-bede-be8a8f1f160e/bin/uautomizer/../../sv-benchmarks/c/loops/terminator_02-2.c [2019-10-22 09:00:37,859 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7561356-18fe-4822-bede-be8a8f1f160e/bin/uautomizer/data/bf1b7e152/4127b344f99248ab812b6dd222fb402f/FLAGaaac36b72 [2019-10-22 09:00:38,228 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:00:38,229 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b7561356-18fe-4822-bede-be8a8f1f160e/sv-benchmarks/c/loops/terminator_02-2.c [2019-10-22 09:00:38,234 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7561356-18fe-4822-bede-be8a8f1f160e/bin/uautomizer/data/bf1b7e152/4127b344f99248ab812b6dd222fb402f/FLAGaaac36b72 [2019-10-22 09:00:38,246 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b7561356-18fe-4822-bede-be8a8f1f160e/bin/uautomizer/data/bf1b7e152/4127b344f99248ab812b6dd222fb402f [2019-10-22 09:00:38,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:00:38,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:00:38,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:38,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:00:38,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:00:38,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76628b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38, skipping insertion in model container [2019-10-22 09:00:38,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,270 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:00:38,285 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:00:38,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:38,455 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:00:38,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:38,565 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:00:38,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38 WrapperNode [2019-10-22 09:00:38,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:38,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:38,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:00:38,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:00:38,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:38,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:00:38,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:00:38,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:00:38,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:00:38,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:00:38,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:00:38,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:00:38,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7561356-18fe-4822-bede-be8a8f1f160e/bin/uautomizer/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 [2019-10-22 09:00:38,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:00:38,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:00:38,863 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:00:38,863 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 09:00:38,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:38 BoogieIcfgContainer [2019-10-22 09:00:38,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:00:38,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:00:38,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:00:38,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:00:38,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:00:38" (1/3) ... [2019-10-22 09:00:38,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e84a340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:38, skipping insertion in model container [2019-10-22 09:00:38,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (2/3) ... [2019-10-22 09:00:38,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e84a340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:38, skipping insertion in model container [2019-10-22 09:00:38,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:38" (3/3) ... [2019-10-22 09:00:38,874 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-2.c [2019-10-22 09:00:38,880 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:00:38,886 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:00:38,892 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:00:38,912 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:00:38,912 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:00:38,912 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:00:38,912 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:00:38,912 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:00:38,912 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:00:38,913 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:00:38,913 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:00:38,926 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-10-22 09:00:38,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 09:00:38,931 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:38,931 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:38,933 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:38,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:38,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1514197582, now seen corresponding path program 1 times [2019-10-22 09:00:38,949 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:38,949 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834183581] [2019-10-22 09:00:38,950 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:38,950 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:38,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:39,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:39,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834183581] [2019-10-22 09:00:39,042 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:39,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:00:39,043 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034920328] [2019-10-22 09:00:39,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 09:00:39,047 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:39,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 09:00:39,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 09:00:39,063 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2019-10-22 09:00:39,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:39,076 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2019-10-22 09:00:39,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 09:00:39,078 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-10-22 09:00:39,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:39,085 INFO L225 Difference]: With dead ends: 23 [2019-10-22 09:00:39,085 INFO L226 Difference]: Without dead ends: 11 [2019-10-22 09:00:39,087 INFO L600 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 [2019-10-22 09:00:39,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-10-22 09:00:39,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-10-22 09:00:39,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 09:00:39,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-10-22 09:00:39,112 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2019-10-22 09:00:39,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:39,112 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-10-22 09:00:39,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 09:00:39,113 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-10-22 09:00:39,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 09:00:39,113 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:39,113 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:39,113 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:39,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:39,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1513899672, now seen corresponding path program 1 times [2019-10-22 09:00:39,114 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:39,114 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362069323] [2019-10-22 09:00:39,114 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:39,114 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:39,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:39,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362069323] [2019-10-22 09:00:39,186 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:39,186 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:00:39,186 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516852685] [2019-10-22 09:00:39,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:00:39,188 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:39,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:39,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:39,189 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 5 states. [2019-10-22 09:00:39,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:39,264 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-10-22 09:00:39,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:00:39,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-10-22 09:00:39,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:39,265 INFO L225 Difference]: With dead ends: 16 [2019-10-22 09:00:39,266 INFO L226 Difference]: Without dead ends: 12 [2019-10-22 09:00:39,266 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:00:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-22 09:00:39,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-22 09:00:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 09:00:39,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-10-22 09:00:39,270 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2019-10-22 09:00:39,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:39,270 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-10-22 09:00:39,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:00:39,270 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-10-22 09:00:39,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 09:00:39,271 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:39,271 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:39,271 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:39,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:39,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1084138147, now seen corresponding path program 1 times [2019-10-22 09:00:39,272 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:39,272 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600789352] [2019-10-22 09:00:39,272 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:39,272 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:39,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:00:39,310 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600789352] [2019-10-22 09:00:39,311 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:39,311 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:00:39,311 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689115816] [2019-10-22 09:00:39,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:00:39,312 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:39,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:00:39,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:00:39,312 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 4 states. [2019-10-22 09:00:39,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:39,345 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-10-22 09:00:39,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:00:39,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-22 09:00:39,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:39,345 INFO L225 Difference]: With dead ends: 12 [2019-10-22 09:00:39,346 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:00:39,346 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:39,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:00:39,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:00:39,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:00:39,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:00:39,347 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-10-22 09:00:39,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:39,347 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:39,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:00:39,347 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:00:39,347 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:00:39,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 09:00:39,362 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 09:00:39,362 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-10-22 09:00:39,362 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 30) no Hoare annotation was computed. [2019-10-22 09:00:39,362 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-10-22 09:00:39,363 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-10-22 09:00:39,363 INFO L446 ceAbstractionStarter]: At program point L5-2(lines 4 9) the Hoare annotation is: true [2019-10-22 09:00:39,363 INFO L446 ceAbstractionStarter]: At program point L34(lines 13 35) the Hoare annotation is: true [2019-10-22 09:00:39,363 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 09:00:39,363 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 09:00:39,363 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2019-10-22 09:00:39,363 INFO L446 ceAbstractionStarter]: At program point L24-2(lines 21 30) the Hoare annotation is: true [2019-10-22 09:00:39,364 INFO L443 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-10-22 09:00:39,364 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-10-22 09:00:39,364 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-22 09:00:39,364 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-10-22 09:00:39,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:00:39 BoogieIcfgContainer [2019-10-22 09:00:39,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:00:39,373 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:00:39,373 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:00:39,373 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:00:39,374 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:38" (3/4) ... [2019-10-22 09:00:39,377 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:00:39,385 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-10-22 09:00:39,386 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 09:00:39,423 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b7561356-18fe-4822-bede-be8a8f1f160e/bin/uautomizer/witness.graphml [2019-10-22 09:00:39,423 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:00:39,425 INFO L168 Benchmark]: Toolchain (without parser) took 1175.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -133.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:39,425 INFO L168 Benchmark]: CDTParser took 2.61 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:39,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -198.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:39,427 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:39,428 INFO L168 Benchmark]: Boogie Preprocessor took 21.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:39,428 INFO L168 Benchmark]: RCFGBuilder took 242.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:39,428 INFO L168 Benchmark]: TraceAbstraction took 507.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:39,429 INFO L168 Benchmark]: Witness Printer took 50.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:39,430 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.61 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 315.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -198.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 242.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 507.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. * Witness Printer took 50.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 6 SDslu, 22 SDs, 0 SdLazy, 33 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 3 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 390 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...