./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/zonotope_tight_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_tight_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/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 7de8352890f1d55270cdee8daa00c3bfaf4226ea ......................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_tight_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/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 7de8352890f1d55270cdee8daa00c3bfaf4226ea ...................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 17:36:00,870 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 17:36:00,871 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 17:36:00,877 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 17:36:00,878 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 17:36:00,878 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 17:36:00,879 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 17:36:00,880 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 17:36:00,881 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 17:36:00,881 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 17:36:00,882 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 17:36:00,882 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 17:36:00,882 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 17:36:00,883 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 17:36:00,883 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 17:36:00,884 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 17:36:00,884 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 17:36:00,885 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 17:36:00,886 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 17:36:00,887 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 17:36:00,887 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 17:36:00,888 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 17:36:00,889 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 17:36:00,889 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 17:36:00,889 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 17:36:00,890 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 17:36:00,890 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 17:36:00,891 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 17:36:00,891 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 17:36:00,892 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 17:36:00,892 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 17:36:00,892 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 17:36:00,892 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 17:36:00,893 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 17:36:00,893 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 17:36:00,893 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 17:36:00,894 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 17:36:00,901 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 17:36:00,901 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 17:36:00,902 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 17:36:00,902 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 17:36:00,902 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 17:36:00,902 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 17:36:00,902 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 17:36:00,902 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 17:36:00,902 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 17:36:00,902 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 17:36:00,902 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 17:36:00,902 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 17:36:00,903 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 17:36:00,903 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 17:36:00,903 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 17:36:00,903 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 17:36:00,903 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 17:36:00,903 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 17:36:00,903 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 17:36:00,903 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 17:36:00,904 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 17:36:00,904 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 17:36:00,904 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 17:36:00,904 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 17:36:00,904 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 17:36:00,904 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 17:36:00,904 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 17:36:00,904 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 17:36:00,904 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 17:36:00,904 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 17:36:00,904 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 17:36:00,905 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 17:36:00,905 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 17:36:00,905 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 17:36:00,905 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 17:36:00,905 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 17:36:00,905 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_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/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 -> 7de8352890f1d55270cdee8daa00c3bfaf4226ea [2018-12-09 17:36:00,923 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 17:36:00,932 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 17:36:00,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 17:36:00,935 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 17:36:00,936 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 17:36:00,936 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/zonotope_tight_true-unreach-call_true-termination.c [2018-12-09 17:36:00,977 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/data/0bc74f24f/da3e896782e842dc9c1e41528da02c82/FLAG9f4ab0ffd [2018-12-09 17:36:01,416 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 17:36:01,416 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/sv-benchmarks/c/float-benchs/zonotope_tight_true-unreach-call_true-termination.c [2018-12-09 17:36:01,420 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/data/0bc74f24f/da3e896782e842dc9c1e41528da02c82/FLAG9f4ab0ffd [2018-12-09 17:36:01,428 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/data/0bc74f24f/da3e896782e842dc9c1e41528da02c82 [2018-12-09 17:36:01,429 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 17:36:01,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 17:36:01,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 17:36:01,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 17:36:01,433 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 17:36:01,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:36:01" (1/1) ... [2018-12-09 17:36:01,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2caf47c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:01, skipping insertion in model container [2018-12-09 17:36:01,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:36:01" (1/1) ... [2018-12-09 17:36:01,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 17:36:01,447 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 17:36:01,529 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:36:01,531 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 17:36:01,539 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:36:01,547 INFO L195 MainTranslator]: Completed translation [2018-12-09 17:36:01,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:01 WrapperNode [2018-12-09 17:36:01,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 17:36:01,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 17:36:01,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 17:36:01,548 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 17:36:01,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:01" (1/1) ... [2018-12-09 17:36:01,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:01" (1/1) ... [2018-12-09 17:36:01,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 17:36:01,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 17:36:01,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 17:36:01,560 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 17:36:01,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:01" (1/1) ... [2018-12-09 17:36:01,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:01" (1/1) ... [2018-12-09 17:36:01,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:01" (1/1) ... [2018-12-09 17:36:01,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:01" (1/1) ... [2018-12-09 17:36:01,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:01" (1/1) ... [2018-12-09 17:36:01,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:01" (1/1) ... [2018-12-09 17:36:01,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:01" (1/1) ... [2018-12-09 17:36:01,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 17:36:01,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 17:36:01,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 17:36:01,572 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 17:36:01,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/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 [2018-12-09 17:36:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 17:36:01,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 17:36:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 17:36:01,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 17:36:01,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 17:36:01,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 17:36:01,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 17:36:01,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 17:36:01,718 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 17:36:01,719 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 17:36:01,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:36:01 BoogieIcfgContainer [2018-12-09 17:36:01,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 17:36:01,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 17:36:01,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 17:36:01,722 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 17:36:01,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:36:01" (1/3) ... [2018-12-09 17:36:01,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375b09b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:36:01, skipping insertion in model container [2018-12-09 17:36:01,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:01" (2/3) ... [2018-12-09 17:36:01,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375b09b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:36:01, skipping insertion in model container [2018-12-09 17:36:01,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:36:01" (3/3) ... [2018-12-09 17:36:01,724 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_tight_true-unreach-call_true-termination.c [2018-12-09 17:36:01,730 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 17:36:01,734 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 17:36:01,744 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 17:36:01,765 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 17:36:01,765 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 17:36:01,766 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 17:36:01,766 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 17:36:01,766 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 17:36:01,766 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 17:36:01,766 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 17:36:01,766 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 17:36:01,778 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-09 17:36:01,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 17:36:01,781 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:36:01,782 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:36:01,783 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 17:36:01,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:36:01,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1736771137, now seen corresponding path program 1 times [2018-12-09 17:36:01,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:36:01,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:36:01,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:36:01,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:36:01,817 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:36:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 17:36:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 17:36:01,857 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 17:36:01,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:36:01 BoogieIcfgContainer [2018-12-09 17:36:01,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 17:36:01,873 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 17:36:01,873 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 17:36:01,873 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 17:36:01,874 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:36:01" (3/4) ... [2018-12-09 17:36:01,876 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 17:36:01,876 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 17:36:01,876 INFO L168 Benchmark]: Toolchain (without parser) took 446.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 958.8 MB in the beginning and 1.1 GB in the end (delta: -165.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:36:01,877 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:36:01,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 116.79 ms. Allocated memory is still 1.0 GB. Free memory was 958.8 MB in the beginning and 947.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-09 17:36:01,878 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.30 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:36:01,879 INFO L168 Benchmark]: Boogie Preprocessor took 11.18 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:36:01,879 INFO L168 Benchmark]: RCFGBuilder took 147.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -190.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-09 17:36:01,880 INFO L168 Benchmark]: TraceAbstraction took 152.96 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: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-09 17:36:01,880 INFO L168 Benchmark]: Witness Printer took 2.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:36:01,882 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 116.79 ms. Allocated memory is still 1.0 GB. Free memory was 958.8 MB in the beginning and 947.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.30 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.18 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 147.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -190.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 152.96 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: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 19. Possible FailurePath: [L13] double x,y; [L15] x = __VERIFIER_nondet_double() [L18] y = x*x - x VAL [x=2] [L19] COND TRUE y >= 0 [L19] y = x / 10. VAL [x=2] [L22] CALL __VERIFIER_assert(y >= 0. && y <= 4.) VAL [\old(cond)=0] [L9] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L9] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 17:36:03,226 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 17:36:03,227 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 17:36:03,233 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 17:36:03,233 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 17:36:03,233 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 17:36:03,234 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 17:36:03,235 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 17:36:03,236 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 17:36:03,237 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 17:36:03,237 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 17:36:03,238 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 17:36:03,238 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 17:36:03,239 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 17:36:03,240 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 17:36:03,240 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 17:36:03,241 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 17:36:03,242 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 17:36:03,243 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 17:36:03,244 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 17:36:03,245 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 17:36:03,246 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 17:36:03,247 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 17:36:03,247 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 17:36:03,248 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 17:36:03,248 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 17:36:03,249 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 17:36:03,249 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 17:36:03,250 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 17:36:03,251 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 17:36:03,251 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 17:36:03,251 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 17:36:03,251 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 17:36:03,252 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 17:36:03,252 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 17:36:03,252 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 17:36:03,253 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 17:36:03,263 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 17:36:03,263 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 17:36:03,264 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 17:36:03,264 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 17:36:03,264 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 17:36:03,265 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 17:36:03,265 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 17:36:03,265 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 17:36:03,265 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 17:36:03,265 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 17:36:03,265 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 17:36:03,266 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 17:36:03,266 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 17:36:03,266 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 17:36:03,266 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 17:36:03,266 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 17:36:03,266 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 17:36:03,266 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 17:36:03,266 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 17:36:03,267 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 17:36:03,267 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 17:36:03,267 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 17:36:03,267 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 17:36:03,267 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 17:36:03,267 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 17:36:03,267 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 17:36:03,267 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 17:36:03,267 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 17:36:03,268 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 17:36:03,268 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 17:36:03,268 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 17:36:03,268 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 17:36:03,268 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 17:36:03,268 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 17:36:03,268 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 17:36:03,268 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/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 -> 7de8352890f1d55270cdee8daa00c3bfaf4226ea [2018-12-09 17:36:03,291 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 17:36:03,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 17:36:03,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 17:36:03,300 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 17:36:03,301 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 17:36:03,301 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/zonotope_tight_true-unreach-call_true-termination.c [2018-12-09 17:36:03,335 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/data/74cafba83/d76e6bedf7dd437c8a46793bebd6e41b/FLAGc09b70e13 [2018-12-09 17:36:03,643 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 17:36:03,644 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/sv-benchmarks/c/float-benchs/zonotope_tight_true-unreach-call_true-termination.c [2018-12-09 17:36:03,647 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/data/74cafba83/d76e6bedf7dd437c8a46793bebd6e41b/FLAGc09b70e13 [2018-12-09 17:36:04,066 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/data/74cafba83/d76e6bedf7dd437c8a46793bebd6e41b [2018-12-09 17:36:04,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 17:36:04,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 17:36:04,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 17:36:04,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 17:36:04,072 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 17:36:04,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:36:04" (1/1) ... [2018-12-09 17:36:04,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49eb7855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:04, skipping insertion in model container [2018-12-09 17:36:04,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:36:04" (1/1) ... [2018-12-09 17:36:04,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 17:36:04,091 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 17:36:04,176 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:36:04,180 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 17:36:04,189 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:36:04,198 INFO L195 MainTranslator]: Completed translation [2018-12-09 17:36:04,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:04 WrapperNode [2018-12-09 17:36:04,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 17:36:04,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 17:36:04,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 17:36:04,199 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 17:36:04,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:04" (1/1) ... [2018-12-09 17:36:04,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:04" (1/1) ... [2018-12-09 17:36:04,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 17:36:04,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 17:36:04,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 17:36:04,213 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 17:36:04,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:04" (1/1) ... [2018-12-09 17:36:04,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:04" (1/1) ... [2018-12-09 17:36:04,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:04" (1/1) ... [2018-12-09 17:36:04,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:04" (1/1) ... [2018-12-09 17:36:04,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:04" (1/1) ... [2018-12-09 17:36:04,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:04" (1/1) ... [2018-12-09 17:36:04,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:04" (1/1) ... [2018-12-09 17:36:04,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 17:36:04,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 17:36:04,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 17:36:04,227 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 17:36:04,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/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 [2018-12-09 17:36:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 17:36:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 17:36:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 17:36:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 17:36:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 17:36:04,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 17:36:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 17:36:04,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 17:36:07,390 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 17:36:07,390 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 17:36:07,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:36:07 BoogieIcfgContainer [2018-12-09 17:36:07,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 17:36:07,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 17:36:07,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 17:36:07,393 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 17:36:07,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:36:04" (1/3) ... [2018-12-09 17:36:07,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6eb9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:36:07, skipping insertion in model container [2018-12-09 17:36:07,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:36:04" (2/3) ... [2018-12-09 17:36:07,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6eb9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:36:07, skipping insertion in model container [2018-12-09 17:36:07,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:36:07" (3/3) ... [2018-12-09 17:36:07,395 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_tight_true-unreach-call_true-termination.c [2018-12-09 17:36:07,401 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 17:36:07,406 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 17:36:07,415 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 17:36:07,431 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 17:36:07,432 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 17:36:07,432 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 17:36:07,432 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 17:36:07,432 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 17:36:07,432 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 17:36:07,432 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 17:36:07,433 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 17:36:07,433 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 17:36:07,442 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-09 17:36:07,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 17:36:07,445 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:36:07,446 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:36:07,447 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 17:36:07,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:36:07,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1736771137, now seen corresponding path program 1 times [2018-12-09 17:36:07,453 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 17:36:07,453 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-09 17:36:07,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:36:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:36:07,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 17:36:12,126 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (= (fp.div roundNearestTiesToEven main_~x~0 .cse0) c_main_~y~0) (fp.leq main_~x~0 .cse0) (fp.geq main_~x~0 (_ +zero 11 53))))) is different from true [2018-12-09 17:36:28,944 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) (or (= (bvadd |c___VERIFIER_assert_#in~cond| (_ bv4294967295 32)) (_ bv0 32)) (and .cse0 (exists ((v_prenex_3 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (fp.leq v_prenex_3 .cse1) (fp.geq v_prenex_3 (_ +zero 11 53)) (not (fp.leq (fp.div roundNearestTiesToEven v_prenex_3 .cse1) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))))))) (and (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (not (fp.geq (fp.div roundNearestTiesToEven v_prenex_1 .cse2) (_ +zero 11 53))) (fp.geq v_prenex_1 (_ +zero 11 53)) (fp.leq v_prenex_1 .cse2)))) .cse0))) is different from false [2018-12-09 17:36:40,177 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) c___VERIFIER_assert_~cond))) (or (and .cse0 (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (not (fp.geq (fp.div roundNearestTiesToEven v_prenex_1 .cse1) (_ +zero 11 53))) (fp.geq v_prenex_1 (_ +zero 11 53)) (fp.leq v_prenex_1 .cse1))))) (and .cse0 (exists ((v_prenex_3 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (fp.leq v_prenex_3 .cse2) (fp.geq v_prenex_3 (_ +zero 11 53)) (not (fp.leq (fp.div roundNearestTiesToEven v_prenex_3 .cse2) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))))))) (= (bvadd c___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) is different from false [2018-12-09 17:36:51,351 WARN L832 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (not (fp.geq (fp.div roundNearestTiesToEven v_prenex_1 .cse0) (_ +zero 11 53))) (fp.geq v_prenex_1 (_ +zero 11 53)) (fp.leq v_prenex_1 .cse0)))) (exists ((v_prenex_3 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (fp.leq v_prenex_3 .cse1) (fp.geq v_prenex_3 (_ +zero 11 53)) (not (fp.leq (fp.div roundNearestTiesToEven v_prenex_3 .cse1) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))))))) is different from false [2018-12-09 17:36:53,537 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (not (fp.geq (fp.div roundNearestTiesToEven v_prenex_1 .cse0) (_ +zero 11 53))) (fp.geq v_prenex_1 (_ +zero 11 53)) (fp.leq v_prenex_1 .cse0)))) (exists ((v_prenex_3 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (fp.leq v_prenex_3 .cse1) (fp.geq v_prenex_3 (_ +zero 11 53)) (not (fp.leq (fp.div roundNearestTiesToEven v_prenex_3 .cse1) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))))))) is different from true [2018-12-09 17:36:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:36:53,541 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 17:36:53,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:36:53,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 17:36:53,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 17:36:53,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 17:36:53,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=6, Unknown=5, NotChecked=20, Total=42 [2018-12-09 17:36:53,565 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 7 states. [2018-12-09 17:37:09,240 WARN L180 SmtUtils]: Spent 11.95 s on a formula simplification that was a NOOP. DAG size: 13 [2018-12-09 17:37:11,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:37:11,588 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-12-09 17:37:11,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 17:37:11,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-12-09 17:37:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:37:11,783 INFO L225 Difference]: With dead ends: 33 [2018-12-09 17:37:11,783 INFO L226 Difference]: Without dead ends: 11 [2018-12-09 17:37:11,785 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=14, Invalid=8, Unknown=6, NotChecked=28, Total=56 [2018-12-09 17:37:11,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-12-09 17:37:11,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-12-09 17:37:11,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-09 17:37:11,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2018-12-09 17:37:11,808 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 10 [2018-12-09 17:37:11,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:37:11,808 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2018-12-09 17:37:11,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 17:37:11,808 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2018-12-09 17:37:11,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 17:37:11,809 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:37:11,809 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:37:11,809 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 17:37:11,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:37:11,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1734924095, now seen corresponding path program 1 times [2018-12-09 17:37:11,809 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 17:37:11,810 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-09 17:37:11,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:37:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:37:12,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 17:37:14,258 WARN L832 $PredicateComparison]: unable to prove that (and (= (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven c_main_~x~0 c_main_~x~0) c_main_~x~0) c_main_~y~0) (fp.leq c_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq c_main_~x~0 (_ +zero 11 53))) is different from false [2018-12-09 17:37:17,686 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven main_~x~0 main_~x~0))) (and (= (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) c_main_~y~0) (fp.leq main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq main_~x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) is different from false [2018-12-09 17:37:19,730 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven main_~x~0 main_~x~0))) (and (= (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) c_main_~y~0) (fp.leq main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq main_~x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) is different from true [2018-12-09 17:37:36,018 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) (or (= (bvadd |c___VERIFIER_assert_#in~cond| (_ bv4294967295 32)) (_ bv0 32)) (and (exists ((main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven main_~x~0 main_~x~0))) (and (not (fp.leq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.leq main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq main_~x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) .cse1) (and (exists ((v_prenex_5 (_ FloatingPoint 11 53))) (let ((.cse2 (fp.mul roundNearestTiesToEven v_prenex_5 v_prenex_5))) (and (fp.leq v_prenex_5 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq v_prenex_5 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse2 v_prenex_5) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.geq (fp.add roundNearestTiesToEven .cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53)))))) .cse1))) is different from false [2018-12-09 17:37:46,313 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) c___VERIFIER_assert_~cond))) (or (and .cse0 (exists ((main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven main_~x~0 main_~x~0))) (and (not (fp.leq (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.leq main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq main_~x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))))) (= (bvadd c___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (and .cse0 (exists ((v_prenex_5 (_ FloatingPoint 11 53))) (let ((.cse2 (fp.mul roundNearestTiesToEven v_prenex_5 v_prenex_5))) (and (fp.leq v_prenex_5 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq v_prenex_5 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse2 v_prenex_5) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.geq (fp.add roundNearestTiesToEven .cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))))))))) is different from false [2018-12-09 17:37:56,605 WARN L832 $PredicateComparison]: unable to prove that (or (exists ((main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven main_~x~0 main_~x~0))) (and (not (fp.leq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.leq main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq main_~x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) (exists ((v_prenex_5 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven v_prenex_5 v_prenex_5))) (and (fp.leq v_prenex_5 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq v_prenex_5 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 v_prenex_5) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.geq (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))))))) is different from false [2018-12-09 17:37:58,650 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven main_~x~0 main_~x~0))) (and (not (fp.leq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.leq main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq main_~x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) (exists ((v_prenex_5 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven v_prenex_5 v_prenex_5))) (and (fp.leq v_prenex_5 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq v_prenex_5 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 v_prenex_5) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.geq (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))))))) is different from true [2018-12-09 17:37:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:37:58,652 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 17:37:58,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:37:58,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 17:37:58,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 17:37:58,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 17:37:58,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=4, Unknown=7, NotChecked=20, Total=42 [2018-12-09 17:37:58,667 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 7 states. [2018-12-09 17:37:58,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:37:58,670 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2018-12-09 17:37:58,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 17:37:58,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-12-09 17:37:58,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:37:58,671 INFO L225 Difference]: With dead ends: 11 [2018-12-09 17:37:58,671 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 17:37:58,672 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=11, Invalid=4, Unknown=7, NotChecked=20, Total=42 [2018-12-09 17:37:58,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 17:37:58,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 17:37:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 17:37:58,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 17:37:58,672 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-12-09 17:37:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:37:58,673 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 17:37:58,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 17:37:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 17:37:58,673 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 17:37:58,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 17:38:21,227 WARN L180 SmtUtils]: Spent 22.51 s on a formula simplification that was a NOOP. DAG size: 26 [2018-12-09 17:38:28,046 WARN L180 SmtUtils]: Spent 6.81 s on a formula simplification. DAG size of input: 86 DAG size of output: 1 [2018-12-09 17:38:28,047 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 17:38:28,048 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 17:38:28,048 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 17:38:28,048 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 17:38:28,048 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 17:38:28,048 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 17:38:28,049 INFO L444 ceAbstractionStarter]: At program point L19-2(lines 19 20) the Hoare annotation is: (or (exists ((main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven main_~x~0 main_~x~0))) (and (= (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) main_~y~0) (fp.leq main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq main_~x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) (and (exists ((main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (= (fp.div roundNearestTiesToEven main_~x~0 .cse1) main_~y~0) (fp.leq main_~x~0 .cse1) (fp.geq main_~x~0 (_ +zero 11 53))))) (fp.leq main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq main_~x~0 (_ +zero 11 53)))) [2018-12-09 17:38:28,049 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 24) the Hoare annotation is: true [2018-12-09 17:38:28,049 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 24) no Hoare annotation was computed. [2018-12-09 17:38:28,049 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 24) no Hoare annotation was computed. [2018-12-09 17:38:28,049 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-12-09 17:38:28,049 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 20) no Hoare annotation was computed. [2018-12-09 17:38:28,050 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2018-12-09 17:38:28,050 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 9) the Hoare annotation is: true [2018-12-09 17:38:28,050 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 9) no Hoare annotation was computed. [2018-12-09 17:38:28,050 INFO L448 ceAbstractionStarter]: For program point L9(line 9) no Hoare annotation was computed. [2018-12-09 17:38:28,050 INFO L448 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-12-09 17:38:28,050 INFO L448 ceAbstractionStarter]: For program point L9-3(line 9) no Hoare annotation was computed. [2018-12-09 17:38:28,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:38:28 BoogieIcfgContainer [2018-12-09 17:38:28,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 17:38:28,054 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 17:38:28,054 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 17:38:28,054 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 17:38:28,054 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:36:07" (3/4) ... [2018-12-09 17:38:28,057 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 17:38:28,062 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 17:38:28,062 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 17:38:28,062 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-09 17:38:28,066 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 17:38:28,066 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 17:38:28,066 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 17:38:28,093 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e8aea6f0-896f-4fc0-b24d-68ca3187d09d/bin-2019/utaipan/witness.graphml [2018-12-09 17:38:28,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 17:38:28,094 INFO L168 Benchmark]: Toolchain (without parser) took 144025.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 942.0 MB in the beginning and 1.0 GB in the end (delta: -84.9 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. [2018-12-09 17:38:28,094 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:38:28,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 129.23 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 17:38:28,095 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.44 ms. Allocated memory is still 1.0 GB. Free memory is still 931.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:38:28,095 INFO L168 Benchmark]: Boogie Preprocessor took 13.78 ms. Allocated memory is still 1.0 GB. Free memory was 931.3 MB in the beginning and 925.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 17:38:28,095 INFO L168 Benchmark]: RCFGBuilder took 3164.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -166.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-09 17:38:28,096 INFO L168 Benchmark]: TraceAbstraction took 140662.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 11.5 GB. [2018-12-09 17:38:28,096 INFO L168 Benchmark]: Witness Printer took 39.41 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-09 17:38:28,098 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 129.23 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.3 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 13.44 ms. Allocated memory is still 1.0 GB. Free memory is still 931.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.78 ms. Allocated memory is still 1.0 GB. Free memory was 931.3 MB in the beginning and 925.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3164.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -166.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 140662.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 11.5 GB. * Witness Printer took 39.41 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 140.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 18.2s AutomataDifference, 0.0s DeadEndRemovalTime, 29.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 3 SDslu, 58 SDs, 0 SdLazy, 1 SolverSat, 1 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 7 PreInvPairs, 8 NumberOfFragments, 66 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 284 FormulaSimplificationTreeSizeReductionInter, 29.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 92.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 8 QuantifiedInterpolants, 4266 SizeOfPredicates, 6 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...