./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-lit/gsv2008_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gsv2008_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/bin-2019/utaipan --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 225f0ddf9f4fc2bb07a34316827f4c052bf2e72a ......................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 15:13:52,818 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 15:13:52,819 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 15:13:52,827 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 15:13:52,827 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 15:13:52,827 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 15:13:52,828 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 15:13:52,829 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 15:13:52,830 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 15:13:52,831 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 15:13:52,831 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 15:13:52,832 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 15:13:52,832 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 15:13:52,833 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 15:13:52,833 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 15:13:52,834 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 15:13:52,834 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 15:13:52,835 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 15:13:52,837 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 15:13:52,838 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 15:13:52,838 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 15:13:52,839 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 15:13:52,840 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 15:13:52,841 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 15:13:52,841 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 15:13:52,841 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 15:13:52,842 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 15:13:52,842 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 15:13:52,843 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 15:13:52,844 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 15:13:52,844 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 15:13:52,844 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 15:13:52,844 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 15:13:52,844 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 15:13:52,845 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 15:13:52,845 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 15:13:52,846 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 15:13:52,855 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 15:13:52,855 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 15:13:52,856 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 15:13:52,856 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 15:13:52,856 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 15:13:52,856 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 15:13:52,856 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 15:13:52,856 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 15:13:52,857 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 15:13:52,857 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 15:13:52,857 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 15:13:52,857 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 15:13:52,857 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 15:13:52,858 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 15:13:52,858 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 15:13:52,858 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 15:13:52,858 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 15:13:52,858 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 15:13:52,858 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 15:13:52,858 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 15:13:52,859 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 15:13:52,859 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 15:13:52,859 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 15:13:52,859 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 15:13:52,859 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 15:13:52,859 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 15:13:52,859 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 15:13:52,860 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 15:13:52,860 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 15:13:52,860 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 15:13:52,860 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 15:13:52,860 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 15:13:52,860 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 15:13:52,860 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 15:13:52,860 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 15:13:52,861 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 15:13:52,861 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 15:13:52,861 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/bin-2019/utaipan 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 -> 225f0ddf9f4fc2bb07a34316827f4c052bf2e72a [2018-11-18 15:13:52,883 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 15:13:52,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 15:13:52,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 15:13:52,896 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 15:13:52,896 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 15:13:52,897 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/bin-2019/utaipan/../../sv-benchmarks/c/loop-lit/gsv2008_true-unreach-call_true-termination.c.i [2018-11-18 15:13:52,939 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/bin-2019/utaipan/data/7978e55df/a8eace5f49864656b72c48ec4fd71135/FLAG00f0b69c0 [2018-11-18 15:13:53,326 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 15:13:53,326 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/sv-benchmarks/c/loop-lit/gsv2008_true-unreach-call_true-termination.c.i [2018-11-18 15:13:53,330 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/bin-2019/utaipan/data/7978e55df/a8eace5f49864656b72c48ec4fd71135/FLAG00f0b69c0 [2018-11-18 15:13:53,339 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/bin-2019/utaipan/data/7978e55df/a8eace5f49864656b72c48ec4fd71135 [2018-11-18 15:13:53,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 15:13:53,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 15:13:53,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 15:13:53,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 15:13:53,345 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 15:13:53,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:13:53" (1/1) ... [2018-11-18 15:13:53,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e779c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:13:53, skipping insertion in model container [2018-11-18 15:13:53,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:13:53" (1/1) ... [2018-11-18 15:13:53,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 15:13:53,364 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 15:13:53,463 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:13:53,465 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 15:13:53,473 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:13:53,480 INFO L195 MainTranslator]: Completed translation [2018-11-18 15:13:53,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:13:53 WrapperNode [2018-11-18 15:13:53,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 15:13:53,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 15:13:53,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 15:13:53,481 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 15:13:53,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:13:53" (1/1) ... [2018-11-18 15:13:53,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:13:53" (1/1) ... [2018-11-18 15:13:53,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 15:13:53,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 15:13:53,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 15:13:53,493 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 15:13:53,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:13:53" (1/1) ... [2018-11-18 15:13:53,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:13:53" (1/1) ... [2018-11-18 15:13:53,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:13:53" (1/1) ... [2018-11-18 15:13:53,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:13:53" (1/1) ... [2018-11-18 15:13:53,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:13:53" (1/1) ... [2018-11-18 15:13:53,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:13:53" (1/1) ... [2018-11-18 15:13:53,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:13:53" (1/1) ... [2018-11-18 15:13:53,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 15:13:53,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 15:13:53,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 15:13:53,505 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 15:13:53,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:13:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/bin-2019/utaipan/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 [2018-11-18 15:13:53,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 15:13:53,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 15:13:53,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 15:13:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 15:13:53,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 15:13:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 15:13:53,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 15:13:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 15:13:53,678 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 15:13:53,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:13:53 BoogieIcfgContainer [2018-11-18 15:13:53,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 15:13:53,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 15:13:53,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 15:13:53,682 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 15:13:53,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:13:53" (1/3) ... [2018-11-18 15:13:53,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cb088f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:13:53, skipping insertion in model container [2018-11-18 15:13:53,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:13:53" (2/3) ... [2018-11-18 15:13:53,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cb088f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:13:53, skipping insertion in model container [2018-11-18 15:13:53,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:13:53" (3/3) ... [2018-11-18 15:13:53,686 INFO L112 eAbstractionObserver]: Analyzing ICFG gsv2008_true-unreach-call_true-termination.c.i [2018-11-18 15:13:53,694 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 15:13:53,700 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 15:13:53,713 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 15:13:53,738 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 15:13:53,738 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 15:13:53,738 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 15:13:53,738 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 15:13:53,738 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 15:13:53,738 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 15:13:53,738 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 15:13:53,738 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 15:13:53,752 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-18 15:13:53,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 15:13:53,756 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:13:53,757 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:13:53,758 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:13:53,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:13:53,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1281911547, now seen corresponding path program 1 times [2018-11-18 15:13:53,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:13:53,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:13:53,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:13:53,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:13:53,802 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:13:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:13:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:13:53,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:13:53,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 15:13:53,844 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:13:53,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 15:13:53,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 15:13:53,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 15:13:53,857 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-18 15:13:53,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:13:53,870 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-18 15:13:53,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 15:13:53,871 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-18 15:13:53,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:13:53,876 INFO L225 Difference]: With dead ends: 32 [2018-11-18 15:13:53,876 INFO L226 Difference]: Without dead ends: 13 [2018-11-18 15:13:53,878 INFO L604 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 [2018-11-18 15:13:53,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-18 15:13:53,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-18 15:13:53,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 15:13:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-18 15:13:53,900 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-11-18 15:13:53,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:13:53,901 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-18 15:13:53,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 15:13:53,901 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-18 15:13:53,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 15:13:53,901 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:13:53,901 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:13:53,902 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:13:53,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:13:53,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1335306055, now seen corresponding path program 1 times [2018-11-18 15:13:53,902 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:13:53,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:13:53,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:13:53,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:13:53,903 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:13:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:13:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:13:53,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:13:53,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 15:13:53,940 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:13:53,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 15:13:53,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 15:13:53,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 15:13:53,942 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2018-11-18 15:13:53,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:13:53,949 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-18 15:13:53,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 15:13:53,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-18 15:13:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:13:53,950 INFO L225 Difference]: With dead ends: 20 [2018-11-18 15:13:53,950 INFO L226 Difference]: Without dead ends: 15 [2018-11-18 15:13:53,951 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 15:13:53,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-18 15:13:53,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-18 15:13:53,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-18 15:13:53,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-18 15:13:53,954 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-11-18 15:13:53,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:13:53,954 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-18 15:13:53,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 15:13:53,954 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-18 15:13:53,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 15:13:53,954 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:13:53,955 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:13:53,955 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:13:53,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:13:53,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1931535679, now seen corresponding path program 1 times [2018-11-18 15:13:53,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:13:53,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:13:53,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:13:53,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:13:53,956 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:13:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:13:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:13:54,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:13:54,022 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 15:13:54,023 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-11-18 15:13:54,025 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [25], [28], [30], [36], [37], [38], [40] [2018-11-18 15:13:54,050 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 15:13:54,050 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 15:13:54,126 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 15:13:54,127 INFO L272 AbstractInterpreter]: Visited 13 different actions 16 times. Merged at 2 different actions 2 times. Never widened. Performed 40 root evaluator evaluations with a maximum evaluation depth of 4. Performed 40 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-11-18 15:13:54,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:13:54,132 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 15:13:54,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:13:54,133 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/bin-2019/utaipan/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 [2018-11-18 15:13:54,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:13:54,140 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 15:13:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:13:54,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:13:54,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:13:54,199 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 15:13:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:13:54,266 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-18 15:13:54,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 13 [2018-11-18 15:13:54,266 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:13:54,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 15:13:54,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 15:13:54,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-11-18 15:13:54,267 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2018-11-18 15:13:54,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:13:54,301 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-11-18 15:13:54,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 15:13:54,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-11-18 15:13:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:13:54,301 INFO L225 Difference]: With dead ends: 15 [2018-11-18 15:13:54,302 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 15:13:54,302 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-11-18 15:13:54,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 15:13:54,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 15:13:54,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 15:13:54,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 15:13:54,303 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-11-18 15:13:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:13:54,303 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:13:54,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 15:13:54,303 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 15:13:54,303 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 15:13:54,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 15:13:54,340 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 15:13:54,340 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 15:13:54,340 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 15:13:54,340 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 15:13:54,340 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 15:13:54,340 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 15:13:54,341 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 21) the Hoare annotation is: true [2018-11-18 15:13:54,341 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 21) no Hoare annotation was computed. [2018-11-18 15:13:54,341 INFO L425 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-11-18 15:13:54,341 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-18 15:13:54,341 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 18) no Hoare annotation was computed. [2018-11-18 15:13:54,341 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 21) no Hoare annotation was computed. [2018-11-18 15:13:54,341 INFO L421 ceAbstractionStarter]: At program point L15-3(lines 15 18) the Hoare annotation is: (or (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 2) main_~y~0)) [2018-11-18 15:13:54,341 INFO L421 ceAbstractionStarter]: At program point L15-4(lines 15 18) the Hoare annotation is: (and (<= (+ main_~x~0 2) main_~y~0) (<= 2 main_~y~0)) [2018-11-18 15:13:54,342 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-18 15:13:54,342 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-18 15:13:54,342 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-18 15:13:54,342 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-18 15:13:54,342 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-18 15:13:54,342 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-18 15:13:54,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 03:13:54 BoogieIcfgContainer [2018-11-18 15:13:54,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 15:13:54,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 15:13:54,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 15:13:54,351 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 15:13:54,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:13:53" (3/4) ... [2018-11-18 15:13:54,353 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 15:13:54,357 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 15:13:54,357 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 15:13:54,357 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 15:13:54,360 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-18 15:13:54,360 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-18 15:13:54,360 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 15:13:54,389 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_70a01410-49f4-4c45-ab4d-09a1b7065ff6/bin-2019/utaipan/witness.graphml [2018-11-18 15:13:54,389 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 15:13:54,389 INFO L168 Benchmark]: Toolchain (without parser) took 1047.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 958.2 MB in the beginning and 1.1 GB in the end (delta: -96.1 MB). Peak memory consumption was 62.3 MB. Max. memory is 11.5 GB. [2018-11-18 15:13:54,390 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:13:54,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.30 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:13:54,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.50 ms. Allocated memory is still 1.0 GB. Free memory is still 947.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:13:54,391 INFO L168 Benchmark]: Boogie Preprocessor took 11.91 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:13:54,391 INFO L168 Benchmark]: RCFGBuilder took 173.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -197.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 15:13:54,392 INFO L168 Benchmark]: TraceAbstraction took 671.23 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: 84.9 MB). Peak memory consumption was 84.9 MB. Max. memory is 11.5 GB. [2018-11-18 15:13:54,392 INFO L168 Benchmark]: Witness Printer took 38.36 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-18 15:13:54,395 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 138.30 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.50 ms. Allocated memory is still 1.0 GB. Free memory is still 947.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.91 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 173.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -197.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 671.23 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: 84.9 MB). Peak memory consumption was 84.9 MB. Max. memory is 11.5 GB. * Witness Printer took 38.36 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: 3.3 MB). Peak memory consumption was 3.3 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: 15]: Loop Invariant Derived loop invariant: x + 50 <= 0 || x + 2 <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 2 SDslu, 41 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 25 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 1640 SizeOfPredicates, 5 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 4/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...