./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 500cb8735f650eb0e7c33062ddc23c2166b17f19 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 17:54:29,623 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:54:29,624 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:54:29,630 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:54:29,631 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:54:29,631 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:54:29,632 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:54:29,633 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:54:29,634 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:54:29,635 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:54:29,635 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:54:29,636 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:54:29,636 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:54:29,637 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:54:29,638 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:54:29,638 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:54:29,638 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:54:29,639 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:54:29,641 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:54:29,641 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:54:29,642 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:54:29,643 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:54:29,645 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:54:29,645 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:54:29,645 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:54:29,645 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:54:29,646 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:54:29,647 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:54:29,647 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:54:29,648 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:54:29,648 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:54:29,648 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:54:29,648 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:54:29,649 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:54:29,649 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:54:29,649 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:54:29,650 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-18 17:54:29,659 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:54:29,659 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:54:29,660 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:54:29,660 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:54:29,660 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:54:29,660 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:54:29,661 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:54:29,661 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 17:54:29,661 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:54:29,661 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:54:29,661 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 17:54:29,661 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 17:54:29,661 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:54:29,662 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:54:29,662 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 17:54:29,662 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:54:29,662 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:54:29,662 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:54:29,662 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:54:29,662 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:54:29,663 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 17:54:29,663 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:54:29,663 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:54:29,663 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:54:29,663 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:54:29,663 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:54:29,663 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:54:29,664 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:54:29,664 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:54:29,664 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:54:29,664 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:54:29,664 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:54:29,664 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 17:54:29,664 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:54:29,664 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:54:29,664 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 17:54:29,665 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_bac048c8-9ff2-4b5d-be65-3a5c942388a4/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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 500cb8735f650eb0e7c33062ddc23c2166b17f19 [2018-11-18 17:54:29,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:54:29,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:54:29,699 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:54:29,701 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:54:29,701 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:54:29,701 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3_true-termination_true-no-overflow.c [2018-11-18 17:54:29,741 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/bin-2019/utaipan/data/56c8868b1/c2da403d75654b8d9f6164cc07444f6b/FLAG6b42c0dd3 [2018-11-18 17:54:30,161 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:54:30,162 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3_true-termination_true-no-overflow.c [2018-11-18 17:54:30,167 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/bin-2019/utaipan/data/56c8868b1/c2da403d75654b8d9f6164cc07444f6b/FLAG6b42c0dd3 [2018-11-18 17:54:30,179 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/bin-2019/utaipan/data/56c8868b1/c2da403d75654b8d9f6164cc07444f6b [2018-11-18 17:54:30,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:54:30,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:54:30,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:54:30,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:54:30,186 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:54:30,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:54:30" (1/1) ... [2018-11-18 17:54:30,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d39cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:30, skipping insertion in model container [2018-11-18 17:54:30,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:54:30" (1/1) ... [2018-11-18 17:54:30,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:54:30,210 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:54:30,339 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:54:30,341 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:54:30,351 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:54:30,359 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:54:30,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:30 WrapperNode [2018-11-18 17:54:30,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:54:30,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:54:30,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:54:30,360 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:54:30,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:30" (1/1) ... [2018-11-18 17:54:30,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:30" (1/1) ... [2018-11-18 17:54:30,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:54:30,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:54:30,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:54:30,374 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:54:30,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:30" (1/1) ... [2018-11-18 17:54:30,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:30" (1/1) ... [2018-11-18 17:54:30,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:30" (1/1) ... [2018-11-18 17:54:30,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:30" (1/1) ... [2018-11-18 17:54:30,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:30" (1/1) ... [2018-11-18 17:54:30,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:30" (1/1) ... [2018-11-18 17:54:30,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:30" (1/1) ... [2018-11-18 17:54:30,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:54:30,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:54:30,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:54:30,387 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:54:30,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/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 [2018-11-18 17:54:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:54:30,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:54:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:54:30,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:54:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:54:30,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:54:30,556 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:54:30,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:54:30 BoogieIcfgContainer [2018-11-18 17:54:30,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:54:30,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:54:30,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:54:30,560 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:54:30,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:54:30" (1/3) ... [2018-11-18 17:54:30,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278163c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:54:30, skipping insertion in model container [2018-11-18 17:54:30,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:54:30" (2/3) ... [2018-11-18 17:54:30,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278163c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:54:30, skipping insertion in model container [2018-11-18 17:54:30,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:54:30" (3/3) ... [2018-11-18 17:54:30,562 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi3_true-termination_true-no-overflow.c [2018-11-18 17:54:30,570 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:54:30,574 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-18 17:54:30,583 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-18 17:54:30,601 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:54:30,601 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:54:30,601 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:54:30,601 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:54:30,601 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:54:30,601 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:54:30,601 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:54:30,602 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:54:30,616 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-18 17:54:30,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 17:54:30,620 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:54:30,621 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:54:30,622 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:54:30,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:54:30,625 INFO L82 PathProgramCache]: Analyzing trace with hash 409964900, now seen corresponding path program 1 times [2018-11-18 17:54:30,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:54:30,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:30,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:54:30,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:30,668 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:54:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:54:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:54:30,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:54:30,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:54:30,725 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:54:30,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:54:30,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:54:30,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:54:30,742 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2018-11-18 17:54:30,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:54:30,790 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2018-11-18 17:54:30,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:54:30,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 17:54:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:54:30,796 INFO L225 Difference]: With dead ends: 36 [2018-11-18 17:54:30,796 INFO L226 Difference]: Without dead ends: 22 [2018-11-18 17:54:30,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:54:30,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-18 17:54:30,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-11-18 17:54:30,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 17:54:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-11-18 17:54:30,820 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 10 [2018-11-18 17:54:30,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:54:30,821 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-11-18 17:54:30,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:54:30,821 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-11-18 17:54:30,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 17:54:30,822 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:54:30,822 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:54:30,822 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:54:30,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:54:30,822 INFO L82 PathProgramCache]: Analyzing trace with hash 409965092, now seen corresponding path program 1 times [2018-11-18 17:54:30,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:54:30,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:30,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:54:30,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:30,824 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:54:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:54:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:54:30,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:54:30,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:54:30,855 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:54:30,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:54:30,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:54:30,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:54:30,857 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 3 states. [2018-11-18 17:54:30,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:54:30,879 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2018-11-18 17:54:30,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:54:30,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 17:54:30,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:54:30,880 INFO L225 Difference]: With dead ends: 39 [2018-11-18 17:54:30,880 INFO L226 Difference]: Without dead ends: 24 [2018-11-18 17:54:30,881 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:54:30,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-18 17:54:30,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-18 17:54:30,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 17:54:30,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-11-18 17:54:30,885 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 10 [2018-11-18 17:54:30,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:54:30,885 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-11-18 17:54:30,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:54:30,885 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-11-18 17:54:30,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 17:54:30,885 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:54:30,885 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:54:30,886 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:54:30,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:54:30,886 INFO L82 PathProgramCache]: Analyzing trace with hash -175989934, now seen corresponding path program 1 times [2018-11-18 17:54:30,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:54:30,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:30,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:54:30,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:30,887 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:54:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:54:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:54:30,906 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:54:30,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:54:30,906 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:54:30,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:54:30,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:54:30,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:54:30,907 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 3 states. [2018-11-18 17:54:30,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:54:30,917 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2018-11-18 17:54:30,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:54:30,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 17:54:30,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:54:30,918 INFO L225 Difference]: With dead ends: 24 [2018-11-18 17:54:30,918 INFO L226 Difference]: Without dead ends: 23 [2018-11-18 17:54:30,918 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:54:30,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-18 17:54:30,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-18 17:54:30,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-18 17:54:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-18 17:54:30,922 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 11 [2018-11-18 17:54:30,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:54:30,922 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-18 17:54:30,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:54:30,922 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-18 17:54:30,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 17:54:30,922 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:54:30,923 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:54:30,923 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:54:30,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:54:30,923 INFO L82 PathProgramCache]: Analyzing trace with hash -246154182, now seen corresponding path program 1 times [2018-11-18 17:54:30,923 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:54:30,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:30,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:54:30,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:30,925 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:54:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:54:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:54:30,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:54:30,947 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 17:54:30,947 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-18 17:54:30,949 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [11], [17], [20], [21], [22], [24], [40], [41], [42] [2018-11-18 17:54:30,969 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 17:54:30,969 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 17:54:31,065 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 17:54:31,066 INFO L272 AbstractInterpreter]: Visited 12 different actions 30 times. Merged at 5 different actions 15 times. Never widened. Performed 92 root evaluator evaluations with a maximum evaluation depth of 3. Performed 92 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-11-18 17:54:31,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:54:31,078 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 17:54:31,078 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:54:31,078 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:54:31,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:54:31,085 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 17:54:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:54:31,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:54:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:54:31,107 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:54:31,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:54:31,158 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:54:31,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-11-18 17:54:31,159 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 17:54:31,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:54:31,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:54:31,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:54:31,159 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 4 states. [2018-11-18 17:54:31,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:54:31,197 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-11-18 17:54:31,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:54:31,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-18 17:54:31,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:54:31,198 INFO L225 Difference]: With dead ends: 30 [2018-11-18 17:54:31,198 INFO L226 Difference]: Without dead ends: 29 [2018-11-18 17:54:31,198 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:54:31,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-18 17:54:31,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2018-11-18 17:54:31,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 17:54:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-11-18 17:54:31,201 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 15 [2018-11-18 17:54:31,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:54:31,201 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-11-18 17:54:31,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:54:31,202 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-11-18 17:54:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 17:54:31,202 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:54:31,202 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:54:31,202 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:54:31,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:54:31,203 INFO L82 PathProgramCache]: Analyzing trace with hash -246153990, now seen corresponding path program 1 times [2018-11-18 17:54:31,203 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:54:31,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:31,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:54:31,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:31,204 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:54:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:54:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 17:54:31,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:54:31,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:54:31,238 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:54:31,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:54:31,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:54:31,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:54:31,239 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 3 states. [2018-11-18 17:54:31,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:54:31,252 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2018-11-18 17:54:31,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:54:31,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-18 17:54:31,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:54:31,253 INFO L225 Difference]: With dead ends: 43 [2018-11-18 17:54:31,253 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 17:54:31,253 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:54:31,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 17:54:31,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-11-18 17:54:31,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 17:54:31,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-11-18 17:54:31,257 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 15 [2018-11-18 17:54:31,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:54:31,257 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-11-18 17:54:31,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:54:31,257 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-11-18 17:54:31,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 17:54:31,258 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:54:31,258 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:54:31,258 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:54:31,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:54:31,258 INFO L82 PathProgramCache]: Analyzing trace with hash 959160962, now seen corresponding path program 1 times [2018-11-18 17:54:31,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:54:31,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:31,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:54:31,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:31,259 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:54:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:54:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 17:54:31,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:54:31,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:54:31,277 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:54:31,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:54:31,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:54:31,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:54:31,277 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 3 states. [2018-11-18 17:54:31,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:54:31,290 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-11-18 17:54:31,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:54:31,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-11-18 17:54:31,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:54:31,292 INFO L225 Difference]: With dead ends: 40 [2018-11-18 17:54:31,292 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 17:54:31,292 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:54:31,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 17:54:31,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-18 17:54:31,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 17:54:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-11-18 17:54:31,299 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 16 [2018-11-18 17:54:31,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:54:31,299 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-11-18 17:54:31,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:54:31,299 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-11-18 17:54:31,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 17:54:31,300 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:54:31,300 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:54:31,300 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:54:31,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:54:31,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1439622948, now seen corresponding path program 2 times [2018-11-18 17:54:31,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:54:31,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:31,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:54:31,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:31,302 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:54:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:54:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:54:31,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:54:31,331 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 17:54:31,331 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 17:54:31,332 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 17:54:31,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:54:31,332 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/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 [2018-11-18 17:54:31,338 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 17:54:31,339 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 17:54:31,344 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2018-11-18 17:54:31,344 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:54:31,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:54:31,364 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-18 17:54:31,364 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:54:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-18 17:54:31,409 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:54:31,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2018-11-18 17:54:31,410 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 17:54:31,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 17:54:31,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 17:54:31,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 17:54:31,410 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 7 states. [2018-11-18 17:54:31,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:54:31,456 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2018-11-18 17:54:31,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 17:54:31,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-18 17:54:31,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:54:31,459 INFO L225 Difference]: With dead ends: 57 [2018-11-18 17:54:31,459 INFO L226 Difference]: Without dead ends: 56 [2018-11-18 17:54:31,459 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-11-18 17:54:31,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-18 17:54:31,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 23. [2018-11-18 17:54:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-18 17:54:31,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-18 17:54:31,464 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-11-18 17:54:31,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:54:31,464 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-18 17:54:31,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 17:54:31,464 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-18 17:54:31,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 17:54:31,464 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:54:31,464 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:54:31,465 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:54:31,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:54:31,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1647973334, now seen corresponding path program 1 times [2018-11-18 17:54:31,465 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:54:31,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:31,468 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:54:31,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:31,468 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:54:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:54:31,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 17:54:31,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:54:31,498 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 17:54:31,498 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-11-18 17:54:31,498 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [11], [17], [20], [22], [24], [26], [27], [28], [30], [40], [41], [42] [2018-11-18 17:54:31,499 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 17:54:31,499 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 17:54:31,555 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 17:54:31,555 INFO L272 AbstractInterpreter]: Visited 15 different actions 48 times. Merged at 8 different actions 27 times. Widened at 1 different actions 1 times. Performed 182 root evaluator evaluations with a maximum evaluation depth of 3. Performed 182 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 7 fixpoints after 3 different actions. Largest state had 6 variables. [2018-11-18 17:54:31,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:54:31,565 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 17:54:31,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:54:31,565 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:54:31,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:54:31,574 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 17:54:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:54:31,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:54:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 17:54:31,598 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:54:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 17:54:31,657 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:54:31,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2018-11-18 17:54:31,657 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 17:54:31,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 17:54:31,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 17:54:31,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 17:54:31,658 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2018-11-18 17:54:31,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:54:31,720 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2018-11-18 17:54:31,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 17:54:31,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-11-18 17:54:31,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:54:31,724 INFO L225 Difference]: With dead ends: 45 [2018-11-18 17:54:31,724 INFO L226 Difference]: Without dead ends: 37 [2018-11-18 17:54:31,725 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2018-11-18 17:54:31,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-18 17:54:31,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2018-11-18 17:54:31,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 17:54:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2018-11-18 17:54:31,730 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 20 [2018-11-18 17:54:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:54:31,730 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2018-11-18 17:54:31,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 17:54:31,730 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2018-11-18 17:54:31,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 17:54:31,731 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:54:31,731 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:54:31,731 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:54:31,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:54:31,731 INFO L82 PathProgramCache]: Analyzing trace with hash -445083666, now seen corresponding path program 2 times [2018-11-18 17:54:31,731 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:54:31,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:31,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:54:31,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:54:31,732 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:54:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:54:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-18 17:54:31,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:54:31,771 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 17:54:31,771 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 17:54:31,771 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 17:54:31,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:54:31,771 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/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 [2018-11-18 17:54:31,779 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 17:54:31,779 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 17:54:31,785 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2018-11-18 17:54:31,785 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:54:31,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:54:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-11-18 17:54:31,817 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:54:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-11-18 17:54:31,847 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:54:31,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2018-11-18 17:54:31,847 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 17:54:31,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 17:54:31,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 17:54:31,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 17:54:31,848 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 7 states. [2018-11-18 17:54:31,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:54:31,889 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2018-11-18 17:54:31,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 17:54:31,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2018-11-18 17:54:31,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:54:31,890 INFO L225 Difference]: With dead ends: 49 [2018-11-18 17:54:31,890 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 17:54:31,890 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-11-18 17:54:31,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 17:54:31,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 17:54:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 17:54:31,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 17:54:31,891 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2018-11-18 17:54:31,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:54:31,891 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:54:31,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 17:54:31,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 17:54:31,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 17:54:31,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 17:54:31,916 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 17:54:31,919 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 17:54:31,924 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 17:54:31,986 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 17:54:31,986 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 17:54:31,986 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 17:54:31,986 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 17:54:31,986 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 17:54:31,986 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 17:54:31,986 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-11-18 17:54:31,987 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-18 17:54:31,987 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 13 30) no Hoare annotation was computed. [2018-11-18 17:54:31,987 INFO L425 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-11-18 17:54:31,987 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 26) no Hoare annotation was computed. [2018-11-18 17:54:31,987 INFO L421 ceAbstractionStarter]: At program point L21-2(lines 20 27) the Hoare annotation is: (let ((.cse0 (<= 0 main_~j~0)) (.cse1 (<= main_~n~0 2147483647)) (.cse2 (<= 0 main_~i~0)) (.cse3 (<= main_~m~0 2147483647))) (or (and .cse0 .cse1 .cse2 (<= 1 main_~m~0) (<= main_~i~0 2147483646) .cse3) (and .cse0 .cse1 .cse2 .cse3 (<= (+ main_~j~0 1) main_~m~0)))) [2018-11-18 17:54:31,987 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 17:54:31,987 INFO L425 ceAbstractionStarter]: For program point L17(lines 17 28) no Hoare annotation was computed. [2018-11-18 17:54:31,987 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 28) no Hoare annotation was computed. [2018-11-18 17:54:31,987 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 13 30) no Hoare annotation was computed. [2018-11-18 17:54:31,987 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-11-18 17:54:31,987 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 13 30) the Hoare annotation is: true [2018-11-18 17:54:31,987 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-18 17:54:31,987 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-18 17:54:31,988 INFO L425 ceAbstractionStarter]: For program point L20-1(lines 20 27) no Hoare annotation was computed. [2018-11-18 17:54:31,988 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 17:54:31,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:54:31 BoogieIcfgContainer [2018-11-18 17:54:31,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:54:31,996 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:54:31,996 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:54:31,996 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:54:31,996 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:54:30" (3/4) ... [2018-11-18 17:54:31,998 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 17:54:32,002 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 17:54:32,002 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 17:54:32,005 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 17:54:32,005 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 17:54:32,006 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 17:54:32,006 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 17:54:32,033 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bac048c8-9ff2-4b5d-be65-3a5c942388a4/bin-2019/utaipan/witness.graphml [2018-11-18 17:54:32,033 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:54:32,034 INFO L168 Benchmark]: Toolchain (without parser) took 1852.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 961.9 MB in the beginning and 928.3 MB in the end (delta: 33.6 MB). Peak memory consumption was 166.8 MB. Max. memory is 11.5 GB. [2018-11-18 17:54:32,035 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:54:32,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.00 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:54:32,035 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.69 ms. Allocated memory is still 1.0 GB. Free memory is still 951.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:54:32,035 INFO L168 Benchmark]: Boogie Preprocessor took 12.67 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:54:32,036 INFO L168 Benchmark]: RCFGBuilder took 169.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:54:32,036 INFO L168 Benchmark]: TraceAbstraction took 1437.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 928.3 MB in the end (delta: 190.7 MB). Peak memory consumption was 190.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:54:32,036 INFO L168 Benchmark]: Witness Printer took 37.70 ms. Allocated memory is still 1.2 GB. Free memory is still 928.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:54:32,038 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 177.00 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.69 ms. Allocated memory is still 1.0 GB. Free memory is still 951.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.67 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 169.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1437.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 928.3 MB in the end (delta: 190.7 MB). Peak memory consumption was 190.7 MB. Max. memory is 11.5 GB. * Witness Printer took 37.70 ms. Allocated memory is still 1.2 GB. Free memory is still 928.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((((0 <= j && n <= 2147483647) && 0 <= i) && 1 <= m) && i <= 2147483646) && m <= 2147483647) || ((((0 <= j && n <= 2147483647) && 0 <= i) && m <= 2147483647) && j + 1 <= m) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 4 error locations. SAFE Result, 1.3s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 113 SDtfs, 97 SDslu, 120 SDs, 0 SdLazy, 115 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 38 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 14 NumberOfFragments, 42 HoareAnnotationTreeSize, 5 FomulaSimplifications, 525 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 242 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 315 ConstructedInterpolants, 0 QuantifiedInterpolants, 17965 SizeOfPredicates, 6 NumberOfNonLiveVariables, 139 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 143/252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...