./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/array-multidimensional/rev-3-u_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/rev-3-u_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/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 92437eab83d9ca7c543428b8fb596132ae033719 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 09:16:29,871 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 09:16:29,872 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 09:16:29,880 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 09:16:29,880 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 09:16:29,880 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 09:16:29,881 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 09:16:29,882 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 09:16:29,883 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 09:16:29,884 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 09:16:29,884 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 09:16:29,885 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 09:16:29,885 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 09:16:29,886 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 09:16:29,887 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 09:16:29,887 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 09:16:29,888 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 09:16:29,889 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 09:16:29,890 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 09:16:29,891 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 09:16:29,892 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 09:16:29,893 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 09:16:29,894 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 09:16:29,895 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 09:16:29,895 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 09:16:29,895 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 09:16:29,896 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 09:16:29,897 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 09:16:29,897 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 09:16:29,898 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 09:16:29,898 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 09:16:29,898 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 09:16:29,899 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 09:16:29,899 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 09:16:29,899 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 09:16:29,899 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 09:16:29,900 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 09:16:29,910 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 09:16:29,910 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 09:16:29,910 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 09:16:29,911 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 09:16:29,911 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 09:16:29,911 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 09:16:29,911 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 09:16:29,911 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 09:16:29,911 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 09:16:29,911 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 09:16:29,911 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 09:16:29,912 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 09:16:29,912 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 09:16:29,912 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 09:16:29,912 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 09:16:29,913 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 09:16:29,913 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 09:16:29,913 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 09:16:29,913 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 09:16:29,913 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 09:16:29,913 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 09:16:29,913 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 09:16:29,913 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 09:16:29,913 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 09:16:29,914 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 09:16:29,914 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 09:16:29,914 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 09:16:29,914 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 09:16:29,914 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 09:16:29,914 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 09:16:29,914 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 09:16:29,914 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 09:16:29,914 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 09:16:29,914 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 09:16:29,915 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_6d696fde-ca67-43ca-a652-590e1718c665/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 -> 92437eab83d9ca7c543428b8fb596132ae033719 [2018-11-10 09:16:29,936 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 09:16:29,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 09:16:29,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 09:16:29,947 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 09:16:29,947 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 09:16:29,948 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/../../sv-benchmarks/c/array-multidimensional/rev-3-u_true-unreach-call.i [2018-11-10 09:16:29,983 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/data/aa59b0260/6cdfc06a9acf420bbb55c584ed88b85c/FLAGc250f6be1 [2018-11-10 09:16:30,291 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 09:16:30,292 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/sv-benchmarks/c/array-multidimensional/rev-3-u_true-unreach-call.i [2018-11-10 09:16:30,297 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/data/aa59b0260/6cdfc06a9acf420bbb55c584ed88b85c/FLAGc250f6be1 [2018-11-10 09:16:30,309 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/data/aa59b0260/6cdfc06a9acf420bbb55c584ed88b85c [2018-11-10 09:16:30,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 09:16:30,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 09:16:30,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 09:16:30,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 09:16:30,316 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 09:16:30,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:16:30" (1/1) ... [2018-11-10 09:16:30,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d37a3f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:16:30, skipping insertion in model container [2018-11-10 09:16:30,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:16:30" (1/1) ... [2018-11-10 09:16:30,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 09:16:30,345 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 09:16:30,473 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:16:30,476 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 09:16:30,493 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:16:30,506 INFO L193 MainTranslator]: Completed translation [2018-11-10 09:16:30,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:16:30 WrapperNode [2018-11-10 09:16:30,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 09:16:30,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 09:16:30,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 09:16:30,507 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 09:16:30,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:16:30" (1/1) ... [2018-11-10 09:16:30,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:16:30" (1/1) ... [2018-11-10 09:16:30,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 09:16:30,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 09:16:30,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 09:16:30,535 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 09:16:30,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:16:30" (1/1) ... [2018-11-10 09:16:30,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:16:30" (1/1) ... [2018-11-10 09:16:30,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:16:30" (1/1) ... [2018-11-10 09:16:30,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:16:30" (1/1) ... [2018-11-10 09:16:30,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:16:30" (1/1) ... [2018-11-10 09:16:30,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:16:30" (1/1) ... [2018-11-10 09:16:30,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:16:30" (1/1) ... [2018-11-10 09:16:30,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 09:16:30,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 09:16:30,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 09:16:30,555 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 09:16:30,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:16:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/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 [2018-11-10 09:16:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 09:16:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 09:16:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 09:16:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 09:16:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 09:16:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 09:16:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 09:16:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 09:16:30,810 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 09:16:30,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:16:30 BoogieIcfgContainer [2018-11-10 09:16:30,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 09:16:30,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 09:16:30,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 09:16:30,813 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 09:16:30,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 09:16:30" (1/3) ... [2018-11-10 09:16:30,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dea3bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 09:16:30, skipping insertion in model container [2018-11-10 09:16:30,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:16:30" (2/3) ... [2018-11-10 09:16:30,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dea3bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 09:16:30, skipping insertion in model container [2018-11-10 09:16:30,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:16:30" (3/3) ... [2018-11-10 09:16:30,815 INFO L112 eAbstractionObserver]: Analyzing ICFG rev-3-u_true-unreach-call.i [2018-11-10 09:16:30,821 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 09:16:30,825 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 09:16:30,836 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 09:16:30,855 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 09:16:30,855 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 09:16:30,855 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 09:16:30,855 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 09:16:30,855 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 09:16:30,856 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 09:16:30,856 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 09:16:30,856 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 09:16:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-11-10 09:16:30,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-10 09:16:30,869 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:16:30,870 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:16:30,871 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:16:30,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:16:30,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1945566331, now seen corresponding path program 1 times [2018-11-10 09:16:30,876 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 09:16:30,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:16:30,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:16:30,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:16:30,906 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 09:16:30,929 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 09:16:30,929 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 09:16:30,929 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 09:16:30,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:16:30,935 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-10 09:16:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:16:30,976 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-10 09:16:30,977 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 09:16:30,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 09:16:30,978 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 09:16:30,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:16:30,983 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 09:16:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:16:31,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:16:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:16:31,034 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 09:16:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:16:31,077 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:16:31,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-11-10 09:16:31,077 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 09:16:31,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 09:16:31,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 09:16:31,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 09:16:31,094 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-11-10 09:16:31,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:16:31,108 INFO L93 Difference]: Finished difference Result 84 states and 121 transitions. [2018-11-10 09:16:31,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 09:16:31,109 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-11-10 09:16:31,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:16:31,116 INFO L225 Difference]: With dead ends: 84 [2018-11-10 09:16:31,116 INFO L226 Difference]: Without dead ends: 40 [2018-11-10 09:16:31,119 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 09:16:31,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-10 09:16:31,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-10 09:16:31,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-10 09:16:31,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-10 09:16:31,143 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 20 [2018-11-10 09:16:31,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:16:31,143 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-10 09:16:31,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 09:16:31,143 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-10 09:16:31,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 09:16:31,144 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:16:31,144 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:16:31,144 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:16:31,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:16:31,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1304843137, now seen corresponding path program 1 times [2018-11-10 09:16:31,144 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 09:16:31,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:16:31,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:16:31,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:16:31,145 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 09:16:31,150 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 09:16:31,151 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 09:16:31,151 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 09:16:31,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:16:31,159 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-10 09:16:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:16:31,193 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-10 09:16:31,193 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 09:16:31,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 09:16:31,193 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 09:16:31,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:16:31,199 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 09:16:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:16:31,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:16:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:16:31,237 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 09:16:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:16:31,273 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:16:31,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-11-10 09:16:31,273 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 09:16:31,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 09:16:31,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 09:16:31,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 09:16:31,274 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 3 states. [2018-11-10 09:16:31,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:16:31,330 INFO L93 Difference]: Finished difference Result 74 states and 90 transitions. [2018-11-10 09:16:31,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 09:16:31,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-11-10 09:16:31,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:16:31,331 INFO L225 Difference]: With dead ends: 74 [2018-11-10 09:16:31,331 INFO L226 Difference]: Without dead ends: 48 [2018-11-10 09:16:31,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 09:16:31,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-10 09:16:31,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2018-11-10 09:16:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-10 09:16:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2018-11-10 09:16:31,338 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 22 [2018-11-10 09:16:31,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:16:31,338 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2018-11-10 09:16:31,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 09:16:31,338 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2018-11-10 09:16:31,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 09:16:31,339 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:16:31,339 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:16:31,339 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:16:31,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:16:31,340 INFO L82 PathProgramCache]: Analyzing trace with hash -272598018, now seen corresponding path program 1 times [2018-11-10 09:16:31,340 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 09:16:31,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:16:31,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:16:31,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:16:31,341 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 09:16:31,345 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 09:16:31,346 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 09:16:31,346 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 09:16:31,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:16:31,355 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-10 09:16:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:16:31,378 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-11-10 09:16:31,379 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [15], [19], [23], [43], [47], [51], [55], [89], [93], [99], [103], [109], [113], [119], [135], [138], [140], [146], [147], [148], [150] [2018-11-10 09:16:31,413 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 09:16:31,413 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 09:16:31,532 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 09:16:31,533 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Never found a fixpoint. Largest state had 29 variables. [2018-11-10 09:16:31,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:16:31,537 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 09:16:31,633 INFO L227 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 76.97% of their original sizes. [2018-11-10 09:16:31,633 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 09:16:31,676 INFO L415 sIntCurrentIteration]: We unified 26 AI predicates to 26 [2018-11-10 09:16:31,676 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 09:16:31,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:16:31,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 09:16:31,677 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 09:16:31,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 09:16:31,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 09:16:31,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 09:16:31,678 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 4 states. [2018-11-10 09:16:31,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:16:31,940 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2018-11-10 09:16:31,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 09:16:31,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-10 09:16:31,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:16:31,941 INFO L225 Difference]: With dead ends: 87 [2018-11-10 09:16:31,942 INFO L226 Difference]: Without dead ends: 53 [2018-11-10 09:16:31,942 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 09:16:31,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-10 09:16:31,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-11-10 09:16:31,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-10 09:16:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2018-11-10 09:16:31,950 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 27 [2018-11-10 09:16:31,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:16:31,950 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2018-11-10 09:16:31,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 09:16:31,950 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2018-11-10 09:16:31,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-10 09:16:31,951 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:16:31,951 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:16:31,952 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:16:31,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:16:31,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1346161551, now seen corresponding path program 1 times [2018-11-10 09:16:31,952 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 09:16:31,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:16:31,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:16:31,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:16:31,953 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 09:16:31,957 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 09:16:31,957 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 09:16:31,957 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 09:16:31,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:16:31,967 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-10 09:16:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:16:32,002 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-11-10 09:16:32,002 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [15], [19], [23], [25], [29], [33], [39], [43], [47], [51], [55], [89], [93], [99], [103], [109], [113], [119], [135], [138], [140], [146], [147], [148], [150] [2018-11-10 09:16:32,004 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 09:16:32,004 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 09:16:32,031 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 09:16:32,031 INFO L272 AbstractInterpreter]: Visited 14 different actions 14 times. Never merged. Never widened. Never found a fixpoint. Largest state had 29 variables. [2018-11-10 09:16:32,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:16:32,033 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 09:16:32,105 INFO L227 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 69.78% of their original sizes. [2018-11-10 09:16:32,105 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 09:16:32,156 INFO L415 sIntCurrentIteration]: We unified 31 AI predicates to 31 [2018-11-10 09:16:32,156 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 09:16:32,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:16:32,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 09:16:32,157 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 09:16:32,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 09:16:32,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 09:16:32,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-10 09:16:32,158 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 5 states. [2018-11-10 09:16:32,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:16:32,201 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-11-10 09:16:32,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 09:16:32,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-10 09:16:32,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:16:32,201 INFO L225 Difference]: With dead ends: 51 [2018-11-10 09:16:32,201 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 09:16:32,202 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-10 09:16:32,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 09:16:32,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 09:16:32,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 09:16:32,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 09:16:32,203 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-11-10 09:16:32,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:16:32,203 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 09:16:32,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 09:16:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 09:16:32,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 09:16:32,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 09:16:32,691 WARN L179 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 26 [2018-11-10 09:16:32,832 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 26 [2018-11-10 09:16:32,978 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 26 [2018-11-10 09:16:32,979 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-10 09:16:32,979 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-10 09:16:32,979 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 09:16:32,980 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 09:16:32,980 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 09:16:32,980 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 09:16:32,980 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 09:16:32,980 INFO L421 ceAbstractionStarter]: At program point L68-3(lines 68 71) the Hoare annotation is: false [2018-11-10 09:16:32,980 INFO L425 ceAbstractionStarter]: For program point L68-4(lines 68 71) no Hoare annotation was computed. [2018-11-10 09:16:32,980 INFO L425 ceAbstractionStarter]: For program point L27-1(lines 27 34) no Hoare annotation was computed. [2018-11-10 09:16:32,980 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 77) no Hoare annotation was computed. [2018-11-10 09:16:32,981 INFO L421 ceAbstractionStarter]: At program point L27-3(lines 27 34) the Hoare annotation is: (and (<= |main_~#A~0.offset| main_~k~0) (<= main_~n~0 (+ |main_~#B~0.offset| 1000)) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (<= |main_~#B~0.offset| main_~i~0) (<= 0 (+ main_~j~0 |main_~#A~0.offset|)) (<= (+ main_~j~0 1000) main_~n~0) (<= (+ main_~k~0 1000) main_~n~0) (= main_~i~0 0)) [2018-11-10 09:16:32,981 INFO L425 ceAbstractionStarter]: For program point L27-4(lines 27 34) no Hoare annotation was computed. [2018-11-10 09:16:32,981 INFO L421 ceAbstractionStarter]: At program point L69(line 69) the Hoare annotation is: false [2018-11-10 09:16:32,981 INFO L425 ceAbstractionStarter]: For program point L69-1(line 69) no Hoare annotation was computed. [2018-11-10 09:16:32,981 INFO L425 ceAbstractionStarter]: For program point L29-1(lines 29 32) no Hoare annotation was computed. [2018-11-10 09:16:32,981 INFO L421 ceAbstractionStarter]: At program point L29-3(lines 29 32) the Hoare annotation is: (and (<= |main_~#A~0.offset| main_~k~0) (<= main_~n~0 (+ |main_~#B~0.offset| 1000)) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (<= |main_~#B~0.offset| main_~i~0) (<= 0 (+ main_~j~0 |main_~#A~0.offset|)) (<= (+ main_~j~0 1000) main_~n~0) (<= (+ main_~k~0 1000) main_~n~0) (= main_~i~0 0)) [2018-11-10 09:16:32,984 INFO L425 ceAbstractionStarter]: For program point L29-4(lines 29 32) no Hoare annotation was computed. [2018-11-10 09:16:32,984 INFO L425 ceAbstractionStarter]: For program point L46-1(lines 46 53) no Hoare annotation was computed. [2018-11-10 09:16:32,984 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 11 77) no Hoare annotation was computed. [2018-11-10 09:16:32,985 INFO L421 ceAbstractionStarter]: At program point L46-3(lines 46 53) the Hoare annotation is: false [2018-11-10 09:16:32,985 INFO L425 ceAbstractionStarter]: For program point L46-4(lines 46 53) no Hoare annotation was computed. [2018-11-10 09:16:32,985 INFO L425 ceAbstractionStarter]: For program point L63-1(lines 63 75) no Hoare annotation was computed. [2018-11-10 09:16:32,985 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 77) the Hoare annotation is: true [2018-11-10 09:16:32,985 INFO L421 ceAbstractionStarter]: At program point L63-3(lines 63 75) the Hoare annotation is: false [2018-11-10 09:16:32,985 INFO L425 ceAbstractionStarter]: For program point L63-4(lines 63 75) no Hoare annotation was computed. [2018-11-10 09:16:32,985 INFO L425 ceAbstractionStarter]: For program point L48-1(lines 48 51) no Hoare annotation was computed. [2018-11-10 09:16:32,985 INFO L421 ceAbstractionStarter]: At program point L48-3(lines 48 51) the Hoare annotation is: false [2018-11-10 09:16:32,985 INFO L425 ceAbstractionStarter]: For program point L48-4(lines 48 51) no Hoare annotation was computed. [2018-11-10 09:16:32,985 INFO L425 ceAbstractionStarter]: For program point L24-1(lines 24 36) no Hoare annotation was computed. [2018-11-10 09:16:32,986 INFO L421 ceAbstractionStarter]: At program point L24-3(lines 24 36) the Hoare annotation is: (and (<= |main_~#A~0.offset| main_~k~0) (<= main_~n~0 (+ |main_~#B~0.offset| 1000)) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (<= |main_~#B~0.offset| main_~i~0) (<= 0 (+ main_~j~0 |main_~#A~0.offset|)) (<= (+ main_~j~0 1000) main_~n~0) (<= (+ main_~k~0 1000) main_~n~0) (= main_~i~0 0)) [2018-11-10 09:16:32,986 INFO L425 ceAbstractionStarter]: For program point L24-4(lines 24 36) no Hoare annotation was computed. [2018-11-10 09:16:32,986 INFO L425 ceAbstractionStarter]: For program point L66-1(lines 66 73) no Hoare annotation was computed. [2018-11-10 09:16:32,986 INFO L421 ceAbstractionStarter]: At program point L66-3(lines 66 73) the Hoare annotation is: false [2018-11-10 09:16:32,986 INFO L425 ceAbstractionStarter]: For program point L66-4(lines 66 73) no Hoare annotation was computed. [2018-11-10 09:16:32,986 INFO L425 ceAbstractionStarter]: For program point L43-1(lines 43 55) no Hoare annotation was computed. [2018-11-10 09:16:32,986 INFO L421 ceAbstractionStarter]: At program point L43-3(lines 43 55) the Hoare annotation is: false [2018-11-10 09:16:32,988 INFO L425 ceAbstractionStarter]: For program point L43-4(lines 43 55) no Hoare annotation was computed. [2018-11-10 09:16:32,988 INFO L425 ceAbstractionStarter]: For program point L68-1(lines 68 71) no Hoare annotation was computed. [2018-11-10 09:16:32,988 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-10 09:16:32,988 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-10 09:16:32,989 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-10 09:16:32,989 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 09:16:32,989 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-10 09:16:32,989 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-10 09:16:33,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 09:16:33 BoogieIcfgContainer [2018-11-10 09:16:33,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 09:16:33,001 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 09:16:33,001 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 09:16:33,001 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 09:16:33,002 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:16:30" (3/4) ... [2018-11-10 09:16:33,005 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 09:16:33,009 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 09:16:33,009 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 09:16:33,009 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 09:16:33,012 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2018-11-10 09:16:33,013 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-11-10 09:16:33,013 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-10 09:16:33,049 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6d696fde-ca67-43ca-a652-590e1718c665/bin-2019/utaipan/witness.graphml [2018-11-10 09:16:33,049 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 09:16:33,049 INFO L168 Benchmark]: Toolchain (without parser) took 2737.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 204.5 MB). Free memory was 958.5 MB in the beginning and 1.0 GB in the end (delta: -67.5 MB). Peak memory consumption was 136.9 MB. Max. memory is 11.5 GB. [2018-11-10 09:16:33,050 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:16:33,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.93 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 947.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 09:16:33,051 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.08 ms. Allocated memory is still 1.0 GB. Free memory was 947.7 MB in the beginning and 945.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 09:16:33,051 INFO L168 Benchmark]: Boogie Preprocessor took 20.31 ms. Allocated memory is still 1.0 GB. Free memory was 945.1 MB in the beginning and 942.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 09:16:33,051 INFO L168 Benchmark]: RCFGBuilder took 255.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -156.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-11-10 09:16:33,052 INFO L168 Benchmark]: TraceAbstraction took 2189.89 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 67.9 MB). Peak memory consumption was 324.3 MB. Max. memory is 11.5 GB. [2018-11-10 09:16:33,053 INFO L168 Benchmark]: Witness Printer took 47.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 11.5 GB. [2018-11-10 09:16:33,055 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 193.93 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 947.7 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 27.08 ms. Allocated memory is still 1.0 GB. Free memory was 947.7 MB in the beginning and 945.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.31 ms. Allocated memory is still 1.0 GB. Free memory was 945.1 MB in the beginning and 942.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 255.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -156.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2189.89 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 67.9 MB). Peak memory consumption was 324.3 MB. Max. memory is 11.5 GB. * Witness Printer took 47.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 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: 46]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (((((((A <= k && n <= B + 1000) && !(A == 0)) && !(B == 0)) && B <= i) && 0 <= j + A) && j + 1000 <= n) && k + 1000 <= n) && i == 0 - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((((((A <= k && n <= B + 1000) && !(A == 0)) && !(B == 0)) && B <= i) && 0 <= j + A) && j + 1000 <= n) && k + 1000 <= n) && i == 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((((((A <= k && n <= B + 1000) && !(A == 0)) && !(B == 0)) && B <= i) && 0 <= j + A) && j + 1000 <= n) && k + 1000 <= n) && i == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 45 locations, 1 error locations. SAFE Result, 2.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 146 SDtfs, 28 SDslu, 57 SDs, 0 SdLazy, 33 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.974228675136116 AbsIntWeakeningRatio, 1.2105263157894737 AbsIntAvgWeakeningVarsNumRemoved, 73.75438596491227 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 18 PreInvPairs, 21 NumberOfFragments, 126 HoareAnnotationTreeSize, 18 FomulaSimplifications, 419 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 933 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 1940 SizeOfPredicates, 2 NumberOfNonLiveVariables, 206 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...