./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call_true-termination.i --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_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/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 a235c453e8d82f15e0f227470cffc0947c40dcd4 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:32:53,828 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 03:32:53,829 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 03:32:53,834 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 03:32:53,835 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 03:32:53,835 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 03:32:53,836 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 03:32:53,837 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 03:32:53,837 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 03:32:53,838 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 03:32:53,838 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 03:32:53,838 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 03:32:53,839 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 03:32:53,839 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 03:32:53,840 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 03:32:53,840 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 03:32:53,840 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 03:32:53,841 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 03:32:53,842 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 03:32:53,843 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 03:32:53,843 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 03:32:53,844 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 03:32:53,845 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 03:32:53,845 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 03:32:53,845 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 03:32:53,845 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 03:32:53,846 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 03:32:53,846 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 03:32:53,847 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 03:32:53,847 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 03:32:53,847 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 03:32:53,847 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 03:32:53,848 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 03:32:53,848 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 03:32:53,848 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 03:32:53,848 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 03:32:53,849 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 03:32:53,856 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 03:32:53,856 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 03:32:53,856 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 03:32:53,856 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 03:32:53,856 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 03:32:53,857 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 03:32:53,857 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 03:32:53,857 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 03:32:53,857 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 03:32:53,857 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 03:32:53,857 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 03:32:53,857 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 03:32:53,857 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 03:32:53,858 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 03:32:53,858 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 03:32:53,858 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 03:32:53,858 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 03:32:53,858 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 03:32:53,858 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 03:32:53,858 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 03:32:53,858 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 03:32:53,858 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 03:32:53,858 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 03:32:53,858 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 03:32:53,859 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 03:32:53,859 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 03:32:53,859 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 03:32:53,859 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 03:32:53,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 03:32:53,859 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 03:32:53,859 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 03:32:53,859 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 03:32:53,859 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 03:32:53,859 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 03:32:53,860 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 03:32:53,860 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 03:32:53,860 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_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/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 -> a235c453e8d82f15e0f227470cffc0947c40dcd4 [2018-12-09 03:32:53,877 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 03:32:53,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 03:32:53,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 03:32:53,886 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 03:32:53,886 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 03:32:53,886 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/bin-2019/utaipan/../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call_true-termination.i [2018-12-09 03:32:53,921 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/bin-2019/utaipan/data/5b8ef77d3/1a607cd6e1f146268ca25270be1f89fa/FLAG1163a0b7c [2018-12-09 03:32:54,214 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 03:32:54,214 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call_true-termination.i [2018-12-09 03:32:54,218 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/bin-2019/utaipan/data/5b8ef77d3/1a607cd6e1f146268ca25270be1f89fa/FLAG1163a0b7c [2018-12-09 03:32:54,664 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/bin-2019/utaipan/data/5b8ef77d3/1a607cd6e1f146268ca25270be1f89fa [2018-12-09 03:32:54,667 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 03:32:54,668 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 03:32:54,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 03:32:54,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 03:32:54,671 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 03:32:54,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:32:54" (1/1) ... [2018-12-09 03:32:54,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73973e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:54, skipping insertion in model container [2018-12-09 03:32:54,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:32:54" (1/1) ... [2018-12-09 03:32:54,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 03:32:54,686 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 03:32:54,772 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 03:32:54,775 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 03:32:54,783 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 03:32:54,791 INFO L195 MainTranslator]: Completed translation [2018-12-09 03:32:54,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:54 WrapperNode [2018-12-09 03:32:54,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 03:32:54,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 03:32:54,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 03:32:54,792 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 03:32:54,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:54" (1/1) ... [2018-12-09 03:32:54,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:54" (1/1) ... [2018-12-09 03:32:54,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 03:32:54,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 03:32:54,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 03:32:54,803 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 03:32:54,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:54" (1/1) ... [2018-12-09 03:32:54,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:54" (1/1) ... [2018-12-09 03:32:54,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:54" (1/1) ... [2018-12-09 03:32:54,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:54" (1/1) ... [2018-12-09 03:32:54,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:54" (1/1) ... [2018-12-09 03:32:54,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:54" (1/1) ... [2018-12-09 03:32:54,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:54" (1/1) ... [2018-12-09 03:32:54,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 03:32:54,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 03:32:54,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 03:32:54,842 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 03:32:54,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/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 03:32:54,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 03:32:54,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 03:32:54,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 03:32:54,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 03:32:54,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 03:32:54,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 03:32:54,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 03:32:54,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 03:32:54,969 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 03:32:54,969 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 03:32:54,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:32:54 BoogieIcfgContainer [2018-12-09 03:32:54,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 03:32:54,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 03:32:54,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 03:32:54,973 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 03:32:54,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:32:54" (1/3) ... [2018-12-09 03:32:54,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc2c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:32:54, skipping insertion in model container [2018-12-09 03:32:54,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:54" (2/3) ... [2018-12-09 03:32:54,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc2c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:32:54, skipping insertion in model container [2018-12-09 03:32:54,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:32:54" (3/3) ... [2018-12-09 03:32:54,975 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call_true-termination.i [2018-12-09 03:32:54,984 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 03:32:54,989 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 03:32:55,003 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 03:32:55,028 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 03:32:55,028 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 03:32:55,028 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 03:32:55,028 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 03:32:55,028 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 03:32:55,028 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 03:32:55,029 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 03:32:55,029 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 03:32:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-12-09 03:32:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 03:32:55,047 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 03:32:55,047 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 03:32:55,049 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 03:32:55,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:32:55,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1281911547, now seen corresponding path program 1 times [2018-12-09 03:32:55,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 03:32:55,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:32:55,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:32:55,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:32:55,084 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 03:32:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 03:32:55,119 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 03:32:55,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 03:32:55,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 03:32:55,120 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 03:32:55,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 03:32:55,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 03:32:55,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 03:32:55,132 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-12-09 03:32:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 03:32:55,143 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-12-09 03:32:55,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 03:32:55,144 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-12-09 03:32:55,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 03:32:55,149 INFO L225 Difference]: With dead ends: 32 [2018-12-09 03:32:55,149 INFO L226 Difference]: Without dead ends: 13 [2018-12-09 03:32:55,151 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 03:32:55,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-09 03:32:55,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-09 03:32:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-09 03:32:55,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-12-09 03:32:55,170 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-12-09 03:32:55,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 03:32:55,171 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-12-09 03:32:55,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 03:32:55,171 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-12-09 03:32:55,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 03:32:55,171 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 03:32:55,171 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 03:32:55,171 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 03:32:55,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:32:55,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1287452673, now seen corresponding path program 1 times [2018-12-09 03:32:55,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 03:32:55,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:32:55,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:32:55,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:32:55,172 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 03:32:55,176 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 03:32:55,176 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 03:32:55,176 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/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 03:32:55,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:32:55,188 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 03:32:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 03:32:55,213 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 03:32:55,214 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 03:32:55,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 03:32:55,214 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/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 03:32:55,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:32:55,221 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 03:32:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 03:32:55,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 03:32:55,256 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 03:32:55,257 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 03:32:55,272 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 03:32:55,287 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 03:32:55,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-12-09 03:32:55,287 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 03:32:55,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 03:32:55,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 03:32:55,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 03:32:55,288 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2018-12-09 03:32:55,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 03:32:55,297 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-12-09 03:32:55,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 03:32:55,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-09 03:32:55,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 03:32:55,298 INFO L225 Difference]: With dead ends: 20 [2018-12-09 03:32:55,298 INFO L226 Difference]: Without dead ends: 15 [2018-12-09 03:32:55,299 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 03:32:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-09 03:32:55,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2018-12-09 03:32:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-09 03:32:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-09 03:32:55,301 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-12-09 03:32:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 03:32:55,301 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-09 03:32:55,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 03:32:55,301 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-09 03:32:55,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 03:32:55,302 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 03:32:55,302 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 03:32:55,302 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 03:32:55,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:32:55,302 INFO L82 PathProgramCache]: Analyzing trace with hash 843923389, now seen corresponding path program 1 times [2018-12-09 03:32:55,302 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 03:32:55,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:32:55,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:32:55,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:32:55,303 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 03:32:55,308 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 03:32:55,308 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 03:32:55,308 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/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 03:32:55,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:32:55,315 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 03:32:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 03:32:55,332 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-12-09 03:32:55,333 INFO L205 CegarAbsIntRunner]: [0], [4], [8], [14], [16], [18], [25], [28], [30], [36], [37], [38], [40] [2018-12-09 03:32:55,352 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 03:32:55,352 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 03:32:55,443 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 03:32:55,444 INFO L272 AbstractInterpreter]: Visited 13 different actions 34 times. Merged at 3 different actions 9 times. Widened at 1 different actions 1 times. Performed 90 root evaluator evaluations with a maximum evaluation depth of 6. Performed 90 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-12-09 03:32:55,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:32:55,449 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 03:32:55,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 03:32:55,449 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/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 03:32:55,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:32:55,455 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 03:32:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 03:32:55,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 03:32:55,527 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 03:32:55,528 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 03:32:55,645 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 03:32:55,660 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 03:32:55,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-12-09 03:32:55,660 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 03:32:55,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 03:32:55,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 03:32:55,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-12-09 03:32:55,661 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 14 states. [2018-12-09 03:32:55,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 03:32:55,748 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-12-09 03:32:55,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 03:32:55,748 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2018-12-09 03:32:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 03:32:55,749 INFO L225 Difference]: With dead ends: 21 [2018-12-09 03:32:55,749 INFO L226 Difference]: Without dead ends: 16 [2018-12-09 03:32:55,749 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-12-09 03:32:55,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-09 03:32:55,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-09 03:32:55,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-09 03:32:55,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-12-09 03:32:55,751 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-12-09 03:32:55,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 03:32:55,751 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-12-09 03:32:55,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 03:32:55,751 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-12-09 03:32:55,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-09 03:32:55,752 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 03:32:55,752 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 03:32:55,752 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 03:32:55,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 03:32:55,752 INFO L82 PathProgramCache]: Analyzing trace with hash 396918779, now seen corresponding path program 2 times [2018-12-09 03:32:55,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 03:32:55,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:32:55,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 03:32:55,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 03:32:55,753 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 03:32:55,756 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 03:32:55,756 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 03:32:55,756 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/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 03:32:55,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 03:32:55,762 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 03:32:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 03:32:55,790 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 03:32:55,790 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 03:32:55,790 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 03:32:55,790 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/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 03:32:55,796 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 03:32:55,796 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 03:32:55,804 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 03:32:55,805 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 03:32:55,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 03:32:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 03:32:55,865 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 03:32:58,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 03:32:58,027 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 03:32:58,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2018-12-09 03:32:58,027 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 03:32:58,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-09 03:32:58,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-09 03:32:58,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=223, Unknown=2, NotChecked=0, Total=272 [2018-12-09 03:32:58,028 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 17 states. [2018-12-09 03:32:58,152 WARN L854 $PredicateComparison]: unable to prove that (and (or (< c_main_~i~0 c_main_~n~0) (= (* 2 c_main_~sum~0) (* (+ c_main_~n~0 1) c_main_~n~0))) (forall ((main_~n~0 Int)) (let ((.cse0 (+ c_main_~i~0 1))) (or (< .cse0 main_~n~0) (= (+ (* 2 c_main_~i~0) (* 2 c_main_~sum~0) 2) (* (+ main_~n~0 1) main_~n~0)) (< main_~n~0 .cse0))))) is different from true [2018-12-09 03:32:58,208 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~n~0 Int)) (or (= (+ (* 2 c_main_~i~0) (* 2 c_main_~sum~0)) (* (+ main_~n~0 1) main_~n~0)) (< c_main_~i~0 main_~n~0) (< main_~n~0 c_main_~i~0))) (or (<= c_main_~i~0 c_main_~n~0) (= (* 2 c_main_~sum~0) (* (+ c_main_~n~0 1) c_main_~n~0)))) is different from true [2018-12-09 03:32:58,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 03:32:58,223 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-12-09 03:32:58,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 03:32:58,224 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 15 [2018-12-09 03:32:58,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 03:32:58,224 INFO L225 Difference]: With dead ends: 19 [2018-12-09 03:32:58,224 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 03:32:58,225 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=87, Invalid=423, Unknown=4, NotChecked=86, Total=600 [2018-12-09 03:32:58,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 03:32:58,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 03:32:58,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 03:32:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 03:32:58,226 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-12-09 03:32:58,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 03:32:58,227 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 03:32:58,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-09 03:32:58,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 03:32:58,227 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 03:32:58,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 03:33:02,230 WARN L180 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 35 DAG size of output: 19 [2018-12-09 03:33:02,232 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 03:33:02,233 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 03:33:02,233 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 03:33:02,233 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 03:33:02,233 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 03:33:02,233 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 03:33:02,233 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2018-12-09 03:33:02,233 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2018-12-09 03:33:02,233 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-12-09 03:33:02,233 INFO L448 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-12-09 03:33:02,233 INFO L448 ceAbstractionStarter]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2018-12-09 03:33:02,233 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2018-12-09 03:33:02,234 INFO L444 ceAbstractionStarter]: At program point L15-3(lines 15 17) the Hoare annotation is: (and (forall ((main_~n~0 Int)) (or (= (+ (* 2 main_~i~0) (* 2 main_~sum~0)) (* (+ main_~n~0 1) main_~n~0)) (< main_~i~0 main_~n~0) (< main_~n~0 main_~i~0))) (or (<= main_~i~0 main_~n~0) (= (* 2 main_~sum~0) (* (+ main_~n~0 1) main_~n~0)))) [2018-12-09 03:33:02,234 INFO L444 ceAbstractionStarter]: At program point L15-4(lines 15 17) the Hoare annotation is: (= (* 2 main_~sum~0) (* (+ main_~n~0 1) main_~n~0)) [2018-12-09 03:33:02,234 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-12-09 03:33:02,234 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-09 03:33:02,234 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-12-09 03:33:02,234 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-09 03:33:02,234 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-09 03:33:02,234 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-12-09 03:33:02,237 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-12-09 03:33:02,238 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-12-09 03:33:02,238 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-12-09 03:33:02,238 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-12-09 03:33:02,242 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-12-09 03:33:02,242 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-12-09 03:33:02,242 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-12-09 03:33:02,242 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-12-09 03:33:02,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:33:02 BoogieIcfgContainer [2018-12-09 03:33:02,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 03:33:02,244 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 03:33:02,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 03:33:02,244 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 03:33:02,244 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:32:54" (3/4) ... [2018-12-09 03:33:02,247 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 03:33:02,250 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 03:33:02,250 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 03:33:02,251 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-09 03:33:02,253 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-09 03:33:02,253 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-09 03:33:02,253 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 03:33:02,278 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_29d06d9e-5a17-4ac0-806d-9d56b5dc24c3/bin-2019/utaipan/witness.graphml [2018-12-09 03:33:02,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 03:33:02,278 INFO L168 Benchmark]: Toolchain (without parser) took 7611.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 949.7 MB in the beginning and 907.2 MB in the end (delta: 42.5 MB). Peak memory consumption was 151.5 MB. Max. memory is 11.5 GB. [2018-12-09 03:33:02,279 INFO L168 Benchmark]: CDTParser took 0.10 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 03:33:02,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 122.99 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 03:33:02,279 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.27 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 03:33:02,279 INFO L168 Benchmark]: Boogie Preprocessor took 38.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -171.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2018-12-09 03:33:02,280 INFO L168 Benchmark]: RCFGBuilder took 128.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-12-09 03:33:02,280 INFO L168 Benchmark]: TraceAbstraction took 7273.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 909.9 MB in the end (delta: 184.6 MB). Peak memory consumption was 184.6 MB. Max. memory is 11.5 GB. [2018-12-09 03:33:02,280 INFO L168 Benchmark]: Witness Printer took 34.05 ms. Allocated memory is still 1.1 GB. Free memory was 909.9 MB in the beginning and 907.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 03:33:02,282 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 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 122.99 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 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 11.27 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -171.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 128.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7273.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 909.9 MB in the end (delta: 184.6 MB). Peak memory consumption was 184.6 MB. Max. memory is 11.5 GB. * Witness Printer took 34.05 ms. Allocated memory is still 1.1 GB. Free memory was 909.9 MB in the beginning and 907.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 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_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant [2018-12-09 03:33:02,285 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-12-09 03:33:02,285 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-12-09 03:33:02,285 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-12-09 03:33:02,285 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-12-09 03:33:02,285 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-12-09 03:33:02,285 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-12-09 03:33:02,286 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] [2018-12-09 03:33:02,286 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~n~0,QUANTIFIED] Derived loop invariant: (forall main_~n~0 : int :: (2 * i + 2 * sum == (main_~n~0 + 1) * main_~n~0 || i < main_~n~0) || main_~n~0 < i) && (i <= n || 2 * sum == (n + 1) * n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 7.2s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 4.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 48 SDtfs, 7 SDslu, 132 SDs, 0 SdLazy, 144 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 49 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 130 FormulaSimplificationTreeSizeReductionInter, 3.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 82 ConstructedInterpolants, 3 QuantifiedInterpolants, 4368 SizeOfPredicates, 11 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 1/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...