./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.v+cfa-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_b613a081-8521-4a93-bbd7-9df6296d4052/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/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 f387422440710097410250bc8628a78b0d15eed2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 01:45:02,881 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:45:02,882 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:45:02,888 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:45:02,889 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:45:02,889 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:45:02,890 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:45:02,891 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:45:02,891 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:45:02,892 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:45:02,892 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:45:02,893 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:45:02,893 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:45:02,894 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:45:02,894 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:45:02,894 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:45:02,895 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:45:02,896 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:45:02,897 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:45:02,898 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:45:02,898 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:45:02,899 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:45:02,900 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:45:02,900 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:45:02,900 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:45:02,901 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:45:02,901 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:45:02,902 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:45:02,902 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:45:02,903 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:45:02,903 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:45:02,903 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:45:02,903 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:45:02,903 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:45:02,904 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:45:02,904 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:45:02,904 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 01:45:02,912 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:45:02,912 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:45:02,912 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:45:02,912 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:45:02,913 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 01:45:02,913 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 01:45:02,913 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 01:45:02,913 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 01:45:02,913 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 01:45:02,913 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 01:45:02,913 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 01:45:02,913 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 01:45:02,914 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 01:45:02,914 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:45:02,914 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 01:45:02,914 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:45:02,914 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 01:45:02,914 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:45:02,915 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 01:45:02,915 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:45:02,915 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 01:45:02,915 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 01:45:02,915 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:45:02,915 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 01:45:02,915 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:45:02,916 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:45:02,916 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:45:02,916 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:45:02,916 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:45:02,916 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:45:02,916 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:45:02,916 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 01:45:02,916 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 01:45:02,917 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:45:02,917 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 01:45:02,917 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 01:45:02,917 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_b613a081-8521-4a93-bbd7-9df6296d4052/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 -> f387422440710097410250bc8628a78b0d15eed2 [2018-12-09 01:45:02,934 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:45:02,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:45:02,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:45:02,944 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:45:02,944 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:45:02,944 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/bin-2019/utaipan/../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c [2018-12-09 01:45:02,980 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/bin-2019/utaipan/data/c4753d879/7b3b72af23044468b790550c5c9b3475/FLAGbce353bc0 [2018-12-09 01:45:03,432 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:45:03,432 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c [2018-12-09 01:45:03,435 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/bin-2019/utaipan/data/c4753d879/7b3b72af23044468b790550c5c9b3475/FLAGbce353bc0 [2018-12-09 01:45:03,443 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/bin-2019/utaipan/data/c4753d879/7b3b72af23044468b790550c5c9b3475 [2018-12-09 01:45:03,445 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:45:03,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:45:03,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:45:03,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:45:03,448 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:45:03,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:45:03" (1/1) ... [2018-12-09 01:45:03,450 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 01:45:03, skipping insertion in model container [2018-12-09 01:45:03,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:45:03" (1/1) ... [2018-12-09 01:45:03,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:45:03,463 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:45:03,545 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:45:03,548 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:45:03,557 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:45:03,565 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:45:03,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:03 WrapperNode [2018-12-09 01:45:03,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:45:03,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:45:03,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:45:03,566 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:45:03,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:03" (1/1) ... [2018-12-09 01:45:03,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:03" (1/1) ... [2018-12-09 01:45:03,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:45:03,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:45:03,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:45:03,578 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:45:03,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:03" (1/1) ... [2018-12-09 01:45:03,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:03" (1/1) ... [2018-12-09 01:45:03,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:03" (1/1) ... [2018-12-09 01:45:03,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:03" (1/1) ... [2018-12-09 01:45:03,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:03" (1/1) ... [2018-12-09 01:45:03,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:03" (1/1) ... [2018-12-09 01:45:03,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:03" (1/1) ... [2018-12-09 01:45:03,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:45:03,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:45:03,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:45:03,589 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:45:03,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/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 01:45:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:45:03,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:45:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:45:03,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:45:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:45:03,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:45:03,732 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:45:03,732 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 01:45:03,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:45:03 BoogieIcfgContainer [2018-12-09 01:45:03,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:45:03,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:45:03,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:45:03,735 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:45:03,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:45:03" (1/3) ... [2018-12-09 01:45:03,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e25d2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:45:03, skipping insertion in model container [2018-12-09 01:45:03,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:03" (2/3) ... [2018-12-09 01:45:03,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e25d2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:45:03, skipping insertion in model container [2018-12-09 01:45:03,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:45:03" (3/3) ... [2018-12-09 01:45:03,737 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call.i.v+cfa-reducer.c [2018-12-09 01:45:03,743 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:45:03,747 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 01:45:03,756 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 01:45:03,775 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:45:03,775 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 01:45:03,775 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:45:03,775 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:45:03,775 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:45:03,775 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:45:03,775 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:45:03,775 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:45:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-12-09 01:45:03,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 01:45:03,789 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:45:03,789 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:45:03,790 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:45:03,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:45:03,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1277702393, now seen corresponding path program 1 times [2018-12-09 01:45:03,795 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:45:03,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:03,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:45:03,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:03,823 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:45:03,845 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 01:45:03,845 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 01:45:03,845 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/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 01:45:03,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:45:03,852 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 01:45:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:45:03,873 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 01:45:03,874 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 01:45:03,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:45:03,874 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/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 01:45:03,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:45:03,883 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 01:45:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:45:03,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:45:03,928 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 01:45:03,928 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:45:03,943 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 01:45:03,966 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:45:03,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-12-09 01:45:03,966 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:45:03,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 01:45:03,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 01:45:03,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:45:03,980 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2018-12-09 01:45:04,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:45:04,038 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2018-12-09 01:45:04,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 01:45:04,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-09 01:45:04,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:45:04,047 INFO L225 Difference]: With dead ends: 26 [2018-12-09 01:45:04,047 INFO L226 Difference]: Without dead ends: 13 [2018-12-09 01:45:04,049 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:45:04,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-09 01:45:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-09 01:45:04,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-09 01:45:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-12-09 01:45:04,069 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-12-09 01:45:04,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:45:04,069 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-12-09 01:45:04,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 01:45:04,070 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-12-09 01:45:04,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 01:45:04,070 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:45:04,070 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:45:04,070 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:45:04,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:45:04,070 INFO L82 PathProgramCache]: Analyzing trace with hash -954130992, now seen corresponding path program 1 times [2018-12-09 01:45:04,071 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:45:04,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:04,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:45:04,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:04,071 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:45:04,076 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 01:45:04,077 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 01:45:04,077 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/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 01:45:04,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:45:04,084 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 01:45:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:45:04,104 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-12-09 01:45:04,105 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [17], [19], [22], [23], [27], [28], [29] [2018-12-09 01:45:04,123 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 01:45:04,123 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 01:45:04,238 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 01:45:04,239 INFO L272 AbstractInterpreter]: Visited 12 different actions 24 times. Merged at 4 different actions 12 times. Widened at 1 different actions 1 times. Performed 110 root evaluator evaluations with a maximum evaluation depth of 6. Performed 110 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 01:45:04,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:45:04,244 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 01:45:04,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:45:04,244 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/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 01:45:04,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:45:04,250 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 01:45:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:45:04,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:45:04,311 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 01:45:04,312 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:45:04,423 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 01:45:04,437 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:45:04,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-12-09 01:45:04,437 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 01:45:04,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 01:45:04,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 01:45:04,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-12-09 01:45:04,438 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 10 states. [2018-12-09 01:45:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:45:04,516 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-12-09 01:45:04,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 01:45:04,516 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2018-12-09 01:45:04,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:45:04,516 INFO L225 Difference]: With dead ends: 17 [2018-12-09 01:45:04,517 INFO L226 Difference]: Without dead ends: 14 [2018-12-09 01:45:04,517 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-12-09 01:45:04,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-09 01:45:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-09 01:45:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-09 01:45:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-09 01:45:04,519 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-12-09 01:45:04,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:45:04,519 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-09 01:45:04,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 01:45:04,519 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-09 01:45:04,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 01:45:04,520 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:45:04,520 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:45:04,520 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:45:04,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:45:04,520 INFO L82 PathProgramCache]: Analyzing trace with hash 486647847, now seen corresponding path program 2 times [2018-12-09 01:45:04,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:45:04,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:04,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:45:04,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:04,521 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:45:04,529 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 01:45:04,529 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 01:45:04,529 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 01:45:04,534 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:45:04,535 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 01:45:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:45:04,552 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 01:45:04,552 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 01:45:04,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:45:04,552 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:45:04,558 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:45:04,558 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 01:45:04,566 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-09 01:45:04,566 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:45:04,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:45:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:45:04,595 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:45:04,664 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) is different from true [2018-12-09 01:45:04,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2018-12-09 01:45:04,701 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:45:04,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-12-09 01:45:04,701 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 01:45:04,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 01:45:04,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 01:45:04,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=54, Unknown=1, NotChecked=14, Total=90 [2018-12-09 01:45:04,702 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-12-09 01:45:04,832 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)))) (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) (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 01:45:04,889 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) (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 01:45:04,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:45:04,958 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2018-12-09 01:45:04,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 01:45:04,958 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-12-09 01:45:04,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:45:04,958 INFO L225 Difference]: With dead ends: 23 [2018-12-09 01:45:04,959 INFO L226 Difference]: Without dead ends: 18 [2018-12-09 01:45:04,959 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=116, Unknown=3, NotChecked=72, Total=240 [2018-12-09 01:45:04,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-09 01:45:04,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-09 01:45:04,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-09 01:45:04,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-12-09 01:45:04,964 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2018-12-09 01:45:04,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:45:04,964 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-12-09 01:45:04,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 01:45:04,964 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-12-09 01:45:04,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 01:45:04,965 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:45:04,965 INFO L402 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:45:04,965 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:45:04,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:45:04,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2089680281, now seen corresponding path program 3 times [2018-12-09 01:45:04,966 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:45:04,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:04,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:45:04,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:04,967 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:45:04,975 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 01:45:04,975 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 01:45:04,976 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 01:45:04,985 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 01:45:04,986 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 01:45:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:45:05,004 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 01:45:05,004 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 01:45:05,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:45:05,004 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:45:05,010 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:45:05,010 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 01:45:05,047 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:45:05,047 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:45:05,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:45:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:45:05,098 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:45:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 6 refuted. 6 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 01:45:05,263 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:45:05,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2018-12-09 01:45:05,263 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 01:45:05,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 01:45:05,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 01:45:05,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=140, Unknown=2, NotChecked=0, Total=182 [2018-12-09 01:45:05,264 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 14 states. [2018-12-09 01:45:05,455 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)))) (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 01:45:05,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:45:05,514 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-12-09 01:45:05,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 01:45:05,514 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2018-12-09 01:45:05,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:45:05,514 INFO L225 Difference]: With dead ends: 20 [2018-12-09 01:45:05,514 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 01:45:05,515 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=334, Unknown=3, NotChecked=38, Total=462 [2018-12-09 01:45:05,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 01:45:05,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 01:45:05,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 01:45:05,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 01:45:05,516 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-12-09 01:45:05,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:45:05,516 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 01:45:05,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 01:45:05,516 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 01:45:05,516 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 01:45:05,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 01:45:09,673 WARN L180 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 58 DAG size of output: 22 [2018-12-09 01:45:09,675 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 01:45:09,676 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 01:45:09,676 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 01:45:09,676 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 01:45:09,676 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 01:45:09,676 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 01:45:09,676 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 01:45:09,676 INFO L444 ceAbstractionStarter]: At program point L33(lines 25 54) 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)))) (<= 1 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 01:45:09,676 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 8 56) the Hoare annotation is: true [2018-12-09 01:45:09,676 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 8 56) no Hoare annotation was computed. [2018-12-09 01:45:09,676 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 54) no Hoare annotation was computed. [2018-12-09 01:45:09,677 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2018-12-09 01:45:09,677 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 55) no Hoare annotation was computed. [2018-12-09 01:45:09,677 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 8 56) no Hoare annotation was computed. [2018-12-09 01:45:09,677 INFO L448 ceAbstractionStarter]: For program point L44(line 44) no Hoare annotation was computed. [2018-12-09 01:45:09,677 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 51) no Hoare annotation was computed. [2018-12-09 01:45:09,680 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 01:45:09,680 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 01:45:09,681 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 01:45:09,681 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 01:45:09,685 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 01:45:09,685 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 01:45:09,685 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 01:45:09,685 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 01:45:09,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:45:09 BoogieIcfgContainer [2018-12-09 01:45:09,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 01:45:09,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:45:09,687 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:45:09,687 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:45:09,687 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:45:03" (3/4) ... [2018-12-09 01:45:09,689 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 01:45:09,692 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 01:45:09,693 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 01:45:09,695 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-09 01:45:09,695 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 01:45:09,719 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b613a081-8521-4a93-bbd7-9df6296d4052/bin-2019/utaipan/witness.graphml [2018-12-09 01:45:09,719 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:45:09,720 INFO L168 Benchmark]: Toolchain (without parser) took 6274.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 950.8 MB in the beginning and 847.2 MB in the end (delta: 103.6 MB). Peak memory consumption was 205.3 MB. Max. memory is 11.5 GB. [2018-12-09 01:45:09,720 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:45:09,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 119.02 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-12-09 01:45:09,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.21 ms. Allocated memory is still 1.0 GB. Free memory is still 940.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:45:09,721 INFO L168 Benchmark]: Boogie Preprocessor took 10.66 ms. Allocated memory is still 1.0 GB. Free memory is still 940.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:45:09,721 INFO L168 Benchmark]: RCFGBuilder took 144.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 940.0 MB in the beginning and 1.1 GB in the end (delta: -144.4 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-12-09 01:45:09,721 INFO L168 Benchmark]: TraceAbstraction took 5953.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 850.7 MB in the end (delta: 233.6 MB). Peak memory consumption was 233.6 MB. Max. memory is 11.5 GB. [2018-12-09 01:45:09,721 INFO L168 Benchmark]: Witness Printer took 32.49 ms. Allocated memory is still 1.1 GB. Free memory was 850.7 MB in the beginning and 847.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-09 01:45:09,723 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 119.02 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.21 ms. Allocated memory is still 1.0 GB. Free memory is still 940.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.66 ms. Allocated memory is still 1.0 GB. Free memory is still 940.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 144.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 940.0 MB in the beginning and 1.1 GB in the end (delta: -144.4 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5953.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 850.7 MB in the end (delta: 233.6 MB). Peak memory consumption was 233.6 MB. Max. memory is 11.5 GB. * Witness Printer took 32.49 ms. Allocated memory is still 1.1 GB. Free memory was 850.7 MB in the beginning and 847.2 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: 44]: 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: 25]: Loop Invariant [2018-12-09 01:45:09,725 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 01:45:09,726 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 01:45:09,726 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 01:45:09,726 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 01:45:09,726 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 01:45:09,726 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 01:45:09,726 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-12-09 01:45:09,726 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) && 1 <= main__n) && (main__i <= main__n || 2 * main__sum == (main__n + 1) * main__n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. SAFE Result, 5.9s OverallTime, 4 OverallIterations, 6 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 4.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 21 SDslu, 112 SDs, 0 SdLazy, 145 SolverSat, 10 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 12 NumberOfFragments, 47 HoareAnnotationTreeSize, 5 FomulaSimplifications, 70 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 211 FormulaSimplificationTreeSizeReductionInter, 4.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 98 ConstructedInterpolants, 8 QuantifiedInterpolants, 6203 SizeOfPredicates, 20 NumberOfNonLiveVariables, 205 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 9/50 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...