./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+lhb-reducer.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_bec447f8-ab46-47ce-9539-fac4a7ea438c/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+lhb-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/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 138b427ae0d59b9c3947d32f186331712a870d16 ................................................................................................................................................................................................................................................................................................................................................................................................................ 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 07:39:52,681 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 07:39:52,681 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 07:39:52,687 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 07:39:52,688 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 07:39:52,688 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 07:39:52,689 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 07:39:52,690 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 07:39:52,690 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 07:39:52,691 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 07:39:52,691 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 07:39:52,691 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 07:39:52,692 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 07:39:52,692 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 07:39:52,693 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 07:39:52,693 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 07:39:52,694 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 07:39:52,695 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 07:39:52,696 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 07:39:52,696 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 07:39:52,697 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 07:39:52,697 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 07:39:52,698 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 07:39:52,699 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 07:39:52,699 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 07:39:52,699 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 07:39:52,700 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 07:39:52,700 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 07:39:52,700 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 07:39:52,701 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 07:39:52,701 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 07:39:52,701 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 07:39:52,702 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 07:39:52,702 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 07:39:52,702 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 07:39:52,702 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 07:39:52,703 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 07:39:52,710 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 07:39:52,710 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 07:39:52,710 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 07:39:52,710 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 07:39:52,711 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 07:39:52,711 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 07:39:52,711 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 07:39:52,711 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 07:39:52,711 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 07:39:52,711 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 07:39:52,711 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 07:39:52,711 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 07:39:52,711 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 07:39:52,712 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 07:39:52,712 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 07:39:52,712 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 07:39:52,712 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 07:39:52,712 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 07:39:52,712 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 07:39:52,712 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 07:39:52,712 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 07:39:52,712 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 07:39:52,712 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 07:39:52,713 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 07:39:52,713 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 07:39:52,713 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 07:39:52,713 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 07:39:52,713 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 07:39:52,713 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 07:39:52,713 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 07:39:52,713 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 07:39:52,713 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 07:39:52,713 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 07:39:52,714 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 07:39:52,714 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 07:39:52,714 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 07:39:52,714 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_bec447f8-ab46-47ce-9539-fac4a7ea438c/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 -> 138b427ae0d59b9c3947d32f186331712a870d16 [2018-12-09 07:39:52,731 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 07:39:52,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 07:39:52,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 07:39:52,740 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 07:39:52,740 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 07:39:52,740 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/bin-2019/utaipan/../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+lhb-reducer.c [2018-12-09 07:39:52,773 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/bin-2019/utaipan/data/2fdb41187/07c30d27f4a245b69ef7a94448315513/FLAG4c525ced5 [2018-12-09 07:39:53,150 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 07:39:53,150 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+lhb-reducer.c [2018-12-09 07:39:53,154 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/bin-2019/utaipan/data/2fdb41187/07c30d27f4a245b69ef7a94448315513/FLAG4c525ced5 [2018-12-09 07:39:53,162 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/bin-2019/utaipan/data/2fdb41187/07c30d27f4a245b69ef7a94448315513 [2018-12-09 07:39:53,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 07:39:53,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 07:39:53,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 07:39:53,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 07:39:53,167 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 07:39:53,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:39:53" (1/1) ... [2018-12-09 07:39:53,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59facd15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:53, skipping insertion in model container [2018-12-09 07:39:53,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:39:53" (1/1) ... [2018-12-09 07:39:53,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 07:39:53,183 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 07:39:53,268 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 07:39:53,270 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 07:39:53,281 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 07:39:53,289 INFO L195 MainTranslator]: Completed translation [2018-12-09 07:39:53,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:53 WrapperNode [2018-12-09 07:39:53,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 07:39:53,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 07:39:53,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 07:39:53,290 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 07:39:53,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:53" (1/1) ... [2018-12-09 07:39:53,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:53" (1/1) ... [2018-12-09 07:39:53,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 07:39:53,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 07:39:53,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 07:39:53,302 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 07:39:53,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:53" (1/1) ... [2018-12-09 07:39:53,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:53" (1/1) ... [2018-12-09 07:39:53,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:53" (1/1) ... [2018-12-09 07:39:53,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:53" (1/1) ... [2018-12-09 07:39:53,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:53" (1/1) ... [2018-12-09 07:39:53,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:53" (1/1) ... [2018-12-09 07:39:53,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:53" (1/1) ... [2018-12-09 07:39:53,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 07:39:53,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 07:39:53,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 07:39:53,313 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 07:39:53,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/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 07:39:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 07:39:53,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 07:39:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 07:39:53,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 07:39:53,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 07:39:53,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 07:39:53,480 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 07:39:53,480 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 07:39:53,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:39:53 BoogieIcfgContainer [2018-12-09 07:39:53,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 07:39:53,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 07:39:53,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 07:39:53,483 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 07:39:53,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:39:53" (1/3) ... [2018-12-09 07:39:53,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41274418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:39:53, skipping insertion in model container [2018-12-09 07:39:53,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:39:53" (2/3) ... [2018-12-09 07:39:53,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41274418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:39:53, skipping insertion in model container [2018-12-09 07:39:53,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:39:53" (3/3) ... [2018-12-09 07:39:53,485 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call.i.p+lhb-reducer.c [2018-12-09 07:39:53,491 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 07:39:53,495 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 07:39:53,505 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 07:39:53,524 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 07:39:53,524 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 07:39:53,524 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 07:39:53,524 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 07:39:53,524 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 07:39:53,525 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 07:39:53,525 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 07:39:53,525 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 07:39:53,535 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-12-09 07:39:53,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 07:39:53,538 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 07:39:53,539 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 07:39:53,540 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 07:39:53,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 07:39:53,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1720236422, now seen corresponding path program 1 times [2018-12-09 07:39:53,545 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 07:39:53,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 07:39:53,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 07:39:53,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 07:39:53,576 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 07:39:53,604 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 07:39:53,604 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 07:39:53,604 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 07:39:53,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 07:39:53,613 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 07:39:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 07:39:53,636 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 07:39:53,637 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 07:39:53,637 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 07:39:53,638 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 07:39:53,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 07:39:53,644 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 07:39:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 07:39:53,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 07:39:53,758 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 07:39:53,758 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 07:39:53,853 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) is different from true [2018-12-09 07:39:55,891 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 2))) (or (= (+ (* 2 c_main_~main__sum~0) (* 6 c_main_~main__i~0) 6) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) is different from true [2018-12-09 07:39:55,897 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 07:39:55,912 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 07:39:55,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9, 7] imperfect sequences [] total 14 [2018-12-09 07:39:55,912 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 07:39:55,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 07:39:55,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 07:39:55,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=106, Unknown=2, NotChecked=42, Total=182 [2018-12-09 07:39:55,924 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 9 states. [2018-12-09 07:39:56,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 07:39:56,023 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2018-12-09 07:39:56,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 07:39:56,024 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-12-09 07:39:56,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 07:39:56,030 INFO L225 Difference]: With dead ends: 41 [2018-12-09 07:39:56,030 INFO L226 Difference]: Without dead ends: 18 [2018-12-09 07:39:56,032 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=38, Invalid=124, Unknown=2, NotChecked=46, Total=210 [2018-12-09 07:39:56,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-09 07:39:56,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-09 07:39:56,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-09 07:39:56,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-12-09 07:39:56,054 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-12-09 07:39:56,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 07:39:56,054 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-12-09 07:39:56,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 07:39:56,054 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-12-09 07:39:56,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 07:39:56,055 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 07:39:56,055 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 07:39:56,055 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 07:39:56,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 07:39:56,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1787659072, now seen corresponding path program 1 times [2018-12-09 07:39:56,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 07:39:56,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 07:39:56,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 07:39:56,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 07:39:56,056 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 07:39:56,063 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 07:39:56,063 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 07:39:56,063 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 07:39:56,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 07:39:56,069 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 07:39:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 07:39:56,087 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-12-09 07:39:56,089 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [16], [19], [22], [25], [28], [32], [34], [37], [38], [47], [48], [49] [2018-12-09 07:39:56,108 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 07:39:56,108 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 07:39:56,216 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 07:39:56,217 INFO L272 AbstractInterpreter]: Visited 17 different actions 29 times. Merged at 4 different actions 12 times. Widened at 1 different actions 1 times. Performed 140 root evaluator evaluations with a maximum evaluation depth of 6. Performed 140 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 10 variables. [2018-12-09 07:39:56,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 07:39:56,222 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 07:39:56,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 07:39:56,222 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 07:39:56,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 07:39:56,228 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 07:39:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 07:39:56,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 07:39:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 07:39:56,309 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 07:40:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 07:40:00,561 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 07:40:00,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2018-12-09 07:40:00,561 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 07:40:00,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-09 07:40:00,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-09 07:40:00,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=155, Unknown=5, NotChecked=0, Total=210 [2018-12-09 07:40:00,562 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 15 states. [2018-12-09 07:40:04,480 WARN L180 SmtUtils]: Spent 3.72 s on a formula simplification that was a NOOP. DAG size: 21 [2018-12-09 07:40:04,651 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (= c_main_~__VERIFIER_assert__cond~0 1) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-12-09 07:40:04,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 07:40:04,657 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-12-09 07:40:04,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 07:40:04,657 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 17 [2018-12-09 07:40:04,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 07:40:04,657 INFO L225 Difference]: With dead ends: 21 [2018-12-09 07:40:04,657 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 07:40:04,658 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=131, Invalid=418, Unknown=7, NotChecked=44, Total=600 [2018-12-09 07:40:04,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 07:40:04,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 07:40:04,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 07:40:04,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 07:40:04,659 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-12-09 07:40:04,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 07:40:04,659 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 07:40:04,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-09 07:40:04,659 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 07:40:04,659 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 07:40:04,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 07:40:04,791 WARN L180 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2018-12-09 07:40:04,793 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 07:40:04,793 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 07:40:04,793 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 07:40:04,793 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 07:40:04,793 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 07:40:04,793 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 07:40:04,793 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 07:40:04,794 INFO L448 ceAbstractionStarter]: For program point L64(line 64) no Hoare annotation was computed. [2018-12-09 07:40:04,794 INFO L448 ceAbstractionStarter]: For program point L62(lines 62 71) no Hoare annotation was computed. [2018-12-09 07:40:04,794 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 8 101) no Hoare annotation was computed. [2018-12-09 07:40:04,794 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 64) no Hoare annotation was computed. [2018-12-09 07:40:04,794 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 8 101) no Hoare annotation was computed. [2018-12-09 07:40:04,794 INFO L448 ceAbstractionStarter]: For program point L44(lines 44 78) no Hoare annotation was computed. [2018-12-09 07:40:04,794 INFO L448 ceAbstractionStarter]: For program point L40(lines 40 83) no Hoare annotation was computed. [2018-12-09 07:40:04,794 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 88) no Hoare annotation was computed. [2018-12-09 07:40:04,794 INFO L448 ceAbstractionStarter]: For program point L32(lines 32 93) no Hoare annotation was computed. [2018-12-09 07:40:04,794 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 8 101) the Hoare annotation is: true [2018-12-09 07:40:04,794 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 98) no Hoare annotation was computed. [2018-12-09 07:40:04,794 INFO L444 ceAbstractionStarter]: At program point L53(lines 45 74) the Hoare annotation is: (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ main_~main__i~0 1))) (or (= (+ (* 2 main_~main__sum~0) (* 4 main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (or (<= main_~main__i~0 main_~main__n~0) (= (* 2 main_~main__sum~0) (* (+ main_~main__n~0 1) main_~main__n~0)))) [2018-12-09 07:40:04,794 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 99) no Hoare annotation was computed. [2018-12-09 07:40:04,795 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 100) no Hoare annotation was computed. [2018-12-09 07:40:04,797 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 07:40:04,798 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 07:40:04,798 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 07:40:04,798 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 07:40:04,802 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 07:40:04,802 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 07:40:04,802 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 07:40:04,802 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 07:40:04,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:40:04 BoogieIcfgContainer [2018-12-09 07:40:04,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 07:40:04,804 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 07:40:04,804 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 07:40:04,804 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 07:40:04,804 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:39:53" (3/4) ... [2018-12-09 07:40:04,807 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 07:40:04,810 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 07:40:04,810 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 07:40:04,813 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-09 07:40:04,813 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 07:40:04,839 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bec447f8-ab46-47ce-9539-fac4a7ea438c/bin-2019/utaipan/witness.graphml [2018-12-09 07:40:04,839 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 07:40:04,840 INFO L168 Benchmark]: Toolchain (without parser) took 11676.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 956.1 MB in the beginning and 909.2 MB in the end (delta: 46.9 MB). Peak memory consumption was 174.8 MB. Max. memory is 11.5 GB. [2018-12-09 07:40:04,841 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 981.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 07:40:04,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 124.83 ms. Allocated memory is still 1.0 GB. Free memory was 956.1 MB in the beginning and 945.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 07:40:04,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.42 ms. Allocated memory is still 1.0 GB. Free memory is still 945.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 07:40:04,841 INFO L168 Benchmark]: Boogie Preprocessor took 10.76 ms. Allocated memory is still 1.0 GB. Free memory was 945.4 MB in the beginning and 942.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 07:40:04,841 INFO L168 Benchmark]: RCFGBuilder took 167.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 942.7 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-09 07:40:04,842 INFO L168 Benchmark]: TraceAbstraction took 11322.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 912.7 MB in the end (delta: 198.1 MB). Peak memory consumption was 198.1 MB. Max. memory is 11.5 GB. [2018-12-09 07:40:04,842 INFO L168 Benchmark]: Witness Printer took 35.55 ms. Allocated memory is still 1.2 GB. Free memory was 912.7 MB in the beginning and 909.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-09 07:40:04,843 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 981.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 124.83 ms. Allocated memory is still 1.0 GB. Free memory was 956.1 MB in the beginning and 945.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.42 ms. Allocated memory is still 1.0 GB. Free memory is still 945.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.76 ms. Allocated memory is still 1.0 GB. Free memory was 945.4 MB in the beginning and 942.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 167.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 942.7 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11322.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 912.7 MB in the end (delta: 198.1 MB). Peak memory consumption was 198.1 MB. Max. memory is 11.5 GB. * Witness Printer took 35.55 ms. Allocated memory is still 1.2 GB. Free memory was 912.7 MB in the beginning and 909.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 64]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 45]: Loop Invariant [2018-12-09 07:40:04,846 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 07:40:04,846 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 07:40:04,846 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 07:40:04,846 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 07:40:04,846 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 07:40:04,846 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 07:40:04,847 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 07:40:04,847 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] Derived loop invariant: (forall main_~main__n~0 : int :: (2 * main__sum + 4 * main__i + 2 == (main_~main__n~0 + 1) * main_~main__n~0 || main_~main__n~0 < main__i + 1) || main__i + 1 < main_~main__n~0) && (main__i <= main__n || 2 * main__sum == (main__n + 1) * main__n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. SAFE Result, 11.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 4.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 22 SDslu, 218 SDs, 0 SdLazy, 194 SolverSat, 21 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 10.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 44 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 95 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 62 ConstructedInterpolants, 11 QuantifiedInterpolants, 6679 SizeOfPredicates, 12 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...