./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/addsub_float_inexact_true-unreach-call_true-termination.c --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_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_float_inexact_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9ad6ad46925d70ccfe8113c6806757723d44310 .................................................................................................................................................................................................................................... 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_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_float_inexact_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9ad6ad46925d70ccfe8113c6806757723d44310 ............................................................................................................................................................................................................................................................................ 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 06:11:14,547 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 06:11:14,549 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 06:11:14,559 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 06:11:14,560 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 06:11:14,560 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 06:11:14,562 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 06:11:14,563 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 06:11:14,564 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 06:11:14,565 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 06:11:14,566 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 06:11:14,566 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 06:11:14,567 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 06:11:14,568 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 06:11:14,569 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 06:11:14,569 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 06:11:14,570 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 06:11:14,571 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 06:11:14,573 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 06:11:14,574 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 06:11:14,575 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 06:11:14,576 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 06:11:14,578 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 06:11:14,578 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 06:11:14,578 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 06:11:14,579 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 06:11:14,580 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 06:11:14,581 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 06:11:14,581 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 06:11:14,582 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 06:11:14,582 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 06:11:14,583 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 06:11:14,583 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 06:11:14,583 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 06:11:14,584 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 06:11:14,585 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 06:11:14,585 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 06:11:14,597 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 06:11:14,597 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 06:11:14,598 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 06:11:14,598 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 06:11:14,599 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 06:11:14,599 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 06:11:14,599 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 06:11:14,599 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 06:11:14,599 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 06:11:14,600 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 06:11:14,600 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 06:11:14,600 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 06:11:14,600 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 06:11:14,600 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 06:11:14,600 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 06:11:14,601 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 06:11:14,601 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 06:11:14,601 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 06:11:14,601 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 06:11:14,601 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 06:11:14,601 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 06:11:14,602 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 06:11:14,602 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 06:11:14,602 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 06:11:14,602 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 06:11:14,602 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 06:11:14,602 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 06:11:14,602 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 06:11:14,603 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 06:11:14,603 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_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9ad6ad46925d70ccfe8113c6806757723d44310 [2018-11-10 06:11:14,632 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 06:11:14,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 06:11:14,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 06:11:14,650 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 06:11:14,651 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 06:11:14,651 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/addsub_float_inexact_true-unreach-call_true-termination.c [2018-11-10 06:11:14,707 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/data/7abbb1fd4/86a0978b9b864a1680aac9c3e5092c11/FLAGaf6d989a4 [2018-11-10 06:11:15,074 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 06:11:15,074 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/sv-benchmarks/c/float-benchs/addsub_float_inexact_true-unreach-call_true-termination.c [2018-11-10 06:11:15,080 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/data/7abbb1fd4/86a0978b9b864a1680aac9c3e5092c11/FLAGaf6d989a4 [2018-11-10 06:11:15,091 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/data/7abbb1fd4/86a0978b9b864a1680aac9c3e5092c11 [2018-11-10 06:11:15,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 06:11:15,095 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 06:11:15,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 06:11:15,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 06:11:15,100 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 06:11:15,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:11:15" (1/1) ... [2018-11-10 06:11:15,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eeb45d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:15, skipping insertion in model container [2018-11-10 06:11:15,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:11:15" (1/1) ... [2018-11-10 06:11:15,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 06:11:15,133 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 06:11:15,288 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:11:15,292 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 06:11:15,307 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:11:15,318 INFO L193 MainTranslator]: Completed translation [2018-11-10 06:11:15,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:15 WrapperNode [2018-11-10 06:11:15,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 06:11:15,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 06:11:15,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 06:11:15,319 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 06:11:15,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:15" (1/1) ... [2018-11-10 06:11:15,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:15" (1/1) ... [2018-11-10 06:11:15,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:15" (1/1) ... [2018-11-10 06:11:15,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:15" (1/1) ... [2018-11-10 06:11:15,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:15" (1/1) ... [2018-11-10 06:11:15,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:15" (1/1) ... [2018-11-10 06:11:15,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:15" (1/1) ... [2018-11-10 06:11:15,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 06:11:15,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 06:11:15,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 06:11:15,340 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 06:11:15,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 06:11:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 06:11:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 06:11:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 06:11:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 06:11:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 06:11:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 06:11:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 06:11:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 06:11:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 06:11:15,535 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 06:11:15,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:11:15 BoogieIcfgContainer [2018-11-10 06:11:15,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 06:11:15,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 06:11:15,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 06:11:15,539 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 06:11:15,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:11:15" (1/3) ... [2018-11-10 06:11:15,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7f7ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:11:15, skipping insertion in model container [2018-11-10 06:11:15,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:15" (2/3) ... [2018-11-10 06:11:15,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7f7ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:11:15, skipping insertion in model container [2018-11-10 06:11:15,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:11:15" (3/3) ... [2018-11-10 06:11:15,542 INFO L112 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact_true-unreach-call_true-termination.c [2018-11-10 06:11:15,549 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 06:11:15,555 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 06:11:15,566 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 06:11:15,588 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 06:11:15,589 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 06:11:15,589 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 06:11:15,589 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 06:11:15,589 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 06:11:15,589 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 06:11:15,589 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 06:11:15,589 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 06:11:15,589 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 06:11:15,602 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-10 06:11:15,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 06:11:15,606 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:11:15,607 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:11:15,608 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:11:15,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:11:15,613 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-11-10 06:11:15,615 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 06:11:15,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 06:11:15,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:11:15,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:11:15,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:11:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 06:11:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 06:11:15,698 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 06:11:15,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:11:15 BoogieIcfgContainer [2018-11-10 06:11:15,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 06:11:15,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 06:11:15,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 06:11:15,716 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 06:11:15,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:11:15" (3/4) ... [2018-11-10 06:11:15,719 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 06:11:15,719 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 06:11:15,720 INFO L168 Benchmark]: Toolchain (without parser) took 625.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 954.8 MB in the beginning and 1.2 GB in the end (delta: -201.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:11:15,722 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:11:15,722 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.46 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 943.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 06:11:15,723 INFO L168 Benchmark]: Boogie Preprocessor took 20.39 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:11:15,723 INFO L168 Benchmark]: RCFGBuilder took 195.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 943.0 MB in the beginning and 1.2 GB in the end (delta: -227.7 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-10 06:11:15,724 INFO L168 Benchmark]: TraceAbstraction took 179.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-10 06:11:15,725 INFO L168 Benchmark]: Witness Printer took 3.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:11:15,727 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 222.46 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 943.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.39 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 195.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 943.0 MB in the beginning and 1.2 GB in the end (delta: -227.7 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 179.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 11. Possible FailurePath: [L8] float x, y, z, r; [L10] x = 1e8f [L11] y = x + 1.f [L12] z = x - 1.f [L13] r = y - z VAL [x=100000000] [L14] CALL __VERIFIER_assert(r == 0.f) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 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=17occurred 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, 9 NumberOfCodeBlocks, 9 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 0.1.23-1dbac8b [2018-11-10 06:11:17,506 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 06:11:17,507 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 06:11:17,516 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 06:11:17,517 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 06:11:17,518 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 06:11:17,519 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 06:11:17,520 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 06:11:17,521 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 06:11:17,522 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 06:11:17,523 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 06:11:17,523 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 06:11:17,524 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 06:11:17,525 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 06:11:17,526 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 06:11:17,527 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 06:11:17,528 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 06:11:17,529 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 06:11:17,531 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 06:11:17,533 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 06:11:17,534 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 06:11:17,535 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 06:11:17,537 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 06:11:17,537 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 06:11:17,537 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 06:11:17,539 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 06:11:17,540 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 06:11:17,541 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 06:11:17,541 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 06:11:17,542 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 06:11:17,543 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 06:11:17,543 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 06:11:17,543 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 06:11:17,544 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 06:11:17,545 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 06:11:17,545 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 06:11:17,545 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-10 06:11:17,559 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 06:11:17,559 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 06:11:17,560 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 06:11:17,560 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 06:11:17,561 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 06:11:17,561 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 06:11:17,561 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 06:11:17,562 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 06:11:17,562 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 06:11:17,562 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 06:11:17,562 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 06:11:17,563 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 06:11:17,563 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 06:11:17,563 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 06:11:17,563 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 06:11:17,563 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 06:11:17,563 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 06:11:17,564 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 06:11:17,564 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 06:11:17,564 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 06:11:17,564 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 06:11:17,564 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 06:11:17,564 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 06:11:17,565 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 06:11:17,565 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 06:11:17,565 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 06:11:17,565 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 06:11:17,565 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-10 06:11:17,565 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 06:11:17,565 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 06:11:17,565 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 06:11:17,565 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_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9ad6ad46925d70ccfe8113c6806757723d44310 [2018-11-10 06:11:17,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 06:11:17,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 06:11:17,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 06:11:17,617 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 06:11:17,617 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 06:11:17,618 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/addsub_float_inexact_true-unreach-call_true-termination.c [2018-11-10 06:11:17,662 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/data/8a7cbd2c2/d5e2524ef343467f8a77b957d472c2b8/FLAGfed12fbcd [2018-11-10 06:11:18,020 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 06:11:18,020 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/sv-benchmarks/c/float-benchs/addsub_float_inexact_true-unreach-call_true-termination.c [2018-11-10 06:11:18,025 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/data/8a7cbd2c2/d5e2524ef343467f8a77b957d472c2b8/FLAGfed12fbcd [2018-11-10 06:11:18,037 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/data/8a7cbd2c2/d5e2524ef343467f8a77b957d472c2b8 [2018-11-10 06:11:18,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 06:11:18,040 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 06:11:18,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 06:11:18,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 06:11:18,045 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 06:11:18,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:11:18" (1/1) ... [2018-11-10 06:11:18,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ff5fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:18, skipping insertion in model container [2018-11-10 06:11:18,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:11:18" (1/1) ... [2018-11-10 06:11:18,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 06:11:18,071 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 06:11:18,195 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:11:18,203 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 06:11:18,218 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:11:18,230 INFO L193 MainTranslator]: Completed translation [2018-11-10 06:11:18,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:18 WrapperNode [2018-11-10 06:11:18,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 06:11:18,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 06:11:18,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 06:11:18,232 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 06:11:18,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:18" (1/1) ... [2018-11-10 06:11:18,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:18" (1/1) ... [2018-11-10 06:11:18,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:18" (1/1) ... [2018-11-10 06:11:18,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:18" (1/1) ... [2018-11-10 06:11:18,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:18" (1/1) ... [2018-11-10 06:11:18,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:18" (1/1) ... [2018-11-10 06:11:18,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:18" (1/1) ... [2018-11-10 06:11:18,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 06:11:18,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 06:11:18,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 06:11:18,262 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 06:11:18,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 06:11:18,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 06:11:18,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 06:11:18,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 06:11:18,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 06:11:18,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 06:11:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 06:11:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 06:11:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 06:11:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 06:11:18,515 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 06:11:18,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:11:18 BoogieIcfgContainer [2018-11-10 06:11:18,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 06:11:18,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 06:11:18,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 06:11:18,519 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 06:11:18,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:11:18" (1/3) ... [2018-11-10 06:11:18,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74213461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:11:18, skipping insertion in model container [2018-11-10 06:11:18,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:18" (2/3) ... [2018-11-10 06:11:18,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74213461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:11:18, skipping insertion in model container [2018-11-10 06:11:18,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:11:18" (3/3) ... [2018-11-10 06:11:18,522 INFO L112 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact_true-unreach-call_true-termination.c [2018-11-10 06:11:18,531 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 06:11:18,539 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 06:11:18,556 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 06:11:18,579 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 06:11:18,580 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 06:11:18,580 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 06:11:18,580 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 06:11:18,580 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 06:11:18,580 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 06:11:18,580 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 06:11:18,580 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 06:11:18,581 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 06:11:18,596 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-10 06:11:18,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 06:11:18,602 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:11:18,603 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:11:18,604 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:11:18,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:11:18,609 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-11-10 06:11:18,612 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 06:11:18,613 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/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 [2018-11-10 06:11:18,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:11:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:11:18,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:11:18,817 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 06:11:18,818 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 06:11:18,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:11:18,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 06:11:18,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 06:11:18,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 06:11:18,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 06:11:18,846 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2018-11-10 06:11:18,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:11:18,913 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2018-11-10 06:11:18,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 06:11:18,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-11-10 06:11:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:11:18,922 INFO L225 Difference]: With dead ends: 24 [2018-11-10 06:11:18,922 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 06:11:18,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 06:11:18,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 06:11:18,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 06:11:18,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 06:11:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 06:11:18,952 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-11-10 06:11:18,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:11:18,952 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 06:11:18,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 06:11:18,952 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 06:11:18,952 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 06:11:18,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 06:11:19,003 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 06:11:19,003 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 06:11:19,003 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 06:11:19,003 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 06:11:19,003 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 06:11:19,004 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 06:11:19,004 INFO L421 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (= (let ((.cse0 ((_ to_fp 8 24) RNE 100000000.0)) (.cse1 ((_ to_fp 8 24) RNE 1.0))) (fp.sub RNE (fp.add RNE .cse0 .cse1) (fp.sub RNE .cse0 .cse1))) main_~r~0) [2018-11-10 06:11:19,004 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 6 16) the Hoare annotation is: true [2018-11-10 06:11:19,004 INFO L425 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-11-10 06:11:19,005 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 6 16) no Hoare annotation was computed. [2018-11-10 06:11:19,005 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 6 16) no Hoare annotation was computed. [2018-11-10 06:11:19,005 INFO L425 ceAbstractionStarter]: For program point L4-3(line 4) no Hoare annotation was computed. [2018-11-10 06:11:19,005 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-11-10 06:11:19,006 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 4) the Hoare annotation is: true [2018-11-10 06:11:19,006 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 4) no Hoare annotation was computed. [2018-11-10 06:11:19,006 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-11-10 06:11:19,006 INFO L425 ceAbstractionStarter]: For program point L4-1(line 4) no Hoare annotation was computed. [2018-11-10 06:11:19,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:11:19 BoogieIcfgContainer [2018-11-10 06:11:19,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 06:11:19,010 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 06:11:19,010 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 06:11:19,010 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 06:11:19,011 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:11:18" (3/4) ... [2018-11-10 06:11:19,014 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 06:11:19,022 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 06:11:19,022 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 06:11:19,023 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 06:11:19,027 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-10 06:11:19,027 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 06:11:19,027 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 06:11:19,027 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 06:11:19,057 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_68b80498-57e3-4a51-a95f-99fe233d7ed1/bin-2019/uautomizer/witness.graphml [2018-11-10 06:11:19,057 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 06:11:19,058 INFO L168 Benchmark]: Toolchain (without parser) took 1018.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 948.6 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:11:19,059 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-11-10 06:11:19,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.78 ms. Allocated memory is still 1.0 GB. Free memory was 948.6 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 06:11:19,060 INFO L168 Benchmark]: Boogie Preprocessor took 30.39 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:11:19,060 INFO L168 Benchmark]: RCFGBuilder took 254.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -210.5 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2018-11-10 06:11:19,061 INFO L168 Benchmark]: TraceAbstraction took 492.67 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: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 11.5 GB. [2018-11-10 06:11:19,061 INFO L168 Benchmark]: Witness Printer took 47.62 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. [2018-11-10 06:11:19,063 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 189.78 ms. Allocated memory is still 1.0 GB. Free memory was 948.6 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.39 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 254.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -210.5 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 492.67 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: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 11.5 GB. * Witness Printer took 47.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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, 17 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11 SDtfs, 7 SDslu, 27 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 25 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 280 SizeOfPredicates, 5 NumberOfNonLiveVariables, 20 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...