./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/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 85017c4a5a64f245bd703090448e8d5785d54b75 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 10:06:16,698 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 10:06:16,699 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 10:06:16,708 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 10:06:16,708 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 10:06:16,709 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 10:06:16,710 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 10:06:16,711 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 10:06:16,712 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 10:06:16,712 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 10:06:16,713 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 10:06:16,713 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 10:06:16,714 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 10:06:16,715 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 10:06:16,715 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 10:06:16,716 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 10:06:16,717 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 10:06:16,718 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 10:06:16,719 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 10:06:16,720 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 10:06:16,721 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 10:06:16,722 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 10:06:16,723 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 10:06:16,724 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 10:06:16,724 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 10:06:16,724 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 10:06:16,725 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 10:06:16,726 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 10:06:16,726 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 10:06:16,727 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 10:06:16,727 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 10:06:16,727 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 10:06:16,728 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 10:06:16,728 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 10:06:16,728 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 10:06:16,729 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 10:06:16,729 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-10 10:06:16,740 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 10:06:16,740 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 10:06:16,741 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 10:06:16,741 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 10:06:16,741 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 10:06:16,741 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 10:06:16,741 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 10:06:16,741 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 10:06:16,742 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 10:06:16,742 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 10:06:16,742 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 10:06:16,742 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 10:06:16,743 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 10:06:16,743 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 10:06:16,743 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 10:06:16,743 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 10:06:16,743 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 10:06:16,743 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 10:06:16,743 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 10:06:16,744 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 10:06:16,744 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 10:06:16,744 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 10:06:16,744 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 10:06:16,744 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 10:06:16,744 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 10:06:16,745 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 10:06:16,745 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 10:06:16,745 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 10:06:16,745 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 10:06:16,745 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 10:06:16,745 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 10:06:16,745 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 10:06:16,746 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 10:06:16,746 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_7c4b9c3d-d509-469a-95f1-a0f37cebd272/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 -> 85017c4a5a64f245bd703090448e8d5785d54b75 [2018-11-10 10:06:16,771 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 10:06:16,781 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 10:06:16,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 10:06:16,786 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 10:06:16,786 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 10:06:16,787 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c [2018-11-10 10:06:16,841 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/bin-2019/utaipan/data/989518194/3e16bb2d589943c88c4854cbd170b6fd/FLAG1e9a68b5b [2018-11-10 10:06:17,182 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 10:06:17,183 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c [2018-11-10 10:06:17,187 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/bin-2019/utaipan/data/989518194/3e16bb2d589943c88c4854cbd170b6fd/FLAG1e9a68b5b [2018-11-10 10:06:17,195 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/bin-2019/utaipan/data/989518194/3e16bb2d589943c88c4854cbd170b6fd [2018-11-10 10:06:17,198 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 10:06:17,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 10:06:17,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 10:06:17,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 10:06:17,203 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 10:06:17,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:06:17" (1/1) ... [2018-11-10 10:06:17,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32089edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:17, skipping insertion in model container [2018-11-10 10:06:17,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:06:17" (1/1) ... [2018-11-10 10:06:17,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 10:06:17,224 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 10:06:17,336 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 10:06:17,338 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 10:06:17,347 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 10:06:17,355 INFO L193 MainTranslator]: Completed translation [2018-11-10 10:06:17,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:17 WrapperNode [2018-11-10 10:06:17,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 10:06:17,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 10:06:17,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 10:06:17,356 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 10:06:17,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:17" (1/1) ... [2018-11-10 10:06:17,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:17" (1/1) ... [2018-11-10 10:06:17,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 10:06:17,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 10:06:17,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 10:06:17,369 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 10:06:17,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:17" (1/1) ... [2018-11-10 10:06:17,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:17" (1/1) ... [2018-11-10 10:06:17,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:17" (1/1) ... [2018-11-10 10:06:17,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:17" (1/1) ... [2018-11-10 10:06:17,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:17" (1/1) ... [2018-11-10 10:06:17,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:17" (1/1) ... [2018-11-10 10:06:17,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:17" (1/1) ... [2018-11-10 10:06:17,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 10:06:17,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 10:06:17,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 10:06:17,382 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 10:06:17,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/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 [2018-11-10 10:06:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 10:06:17,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 10:06:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 10:06:17,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 10:06:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 10:06:17,457 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 10:06:17,539 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 10:06:17,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:06:17 BoogieIcfgContainer [2018-11-10 10:06:17,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 10:06:17,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 10:06:17,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 10:06:17,542 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 10:06:17,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:06:17" (1/3) ... [2018-11-10 10:06:17,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3eae68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:06:17, skipping insertion in model container [2018-11-10 10:06:17,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:17" (2/3) ... [2018-11-10 10:06:17,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3eae68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:06:17, skipping insertion in model container [2018-11-10 10:06:17,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:06:17" (3/3) ... [2018-11-10 10:06:17,544 INFO L112 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c [2018-11-10 10:06:17,550 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 10:06:17,554 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-10 10:06:17,563 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-10 10:06:17,583 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 10:06:17,583 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 10:06:17,583 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 10:06:17,583 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 10:06:17,583 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 10:06:17,583 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 10:06:17,583 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 10:06:17,583 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 10:06:17,593 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-10 10:06:17,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-10 10:06:17,597 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:06:17,598 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:06:17,600 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 10:06:17,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:06:17,604 INFO L82 PathProgramCache]: Analyzing trace with hash 604672971, now seen corresponding path program 1 times [2018-11-10 10:06:17,605 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 10:06:17,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:06:17,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:06:17,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:06:17,639 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 10:06:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:06:17,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:06:17,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 10:06:17,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 10:06:17,695 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 10:06:17,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 10:06:17,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 10:06:17,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 10:06:17,712 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2018-11-10 10:06:17,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:06:17,749 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-11-10 10:06:17,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 10:06:17,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-10 10:06:17,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:06:17,756 INFO L225 Difference]: With dead ends: 33 [2018-11-10 10:06:17,756 INFO L226 Difference]: Without dead ends: 19 [2018-11-10 10:06:17,758 INFO L605 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 [2018-11-10 10:06:17,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-10 10:06:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2018-11-10 10:06:17,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 10:06:17,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-10 10:06:17,780 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2018-11-10 10:06:17,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:06:17,780 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-10 10:06:17,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 10:06:17,780 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-10 10:06:17,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 10:06:17,781 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:06:17,781 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:06:17,781 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 10:06:17,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:06:17,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1564992965, now seen corresponding path program 1 times [2018-11-10 10:06:17,782 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 10:06:17,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:06:17,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:06:17,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:06:17,783 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 10:06:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:06:17,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:06:17,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 10:06:17,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 10:06:17,824 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 10:06:17,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 10:06:17,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 10:06:17,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 10:06:17,827 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2018-11-10 10:06:17,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:06:17,873 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-11-10 10:06:17,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 10:06:17,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-11-10 10:06:17,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:06:17,874 INFO L225 Difference]: With dead ends: 23 [2018-11-10 10:06:17,874 INFO L226 Difference]: Without dead ends: 21 [2018-11-10 10:06:17,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 10:06:17,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-10 10:06:17,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2018-11-10 10:06:17,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-10 10:06:17,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-10 10:06:17,877 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 9 [2018-11-10 10:06:17,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:06:17,877 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-10 10:06:17,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 10:06:17,877 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-10 10:06:17,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 10:06:17,878 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:06:17,878 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:06:17,878 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 10:06:17,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:06:17,878 INFO L82 PathProgramCache]: Analyzing trace with hash 719687367, now seen corresponding path program 1 times [2018-11-10 10:06:17,878 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 10:06:17,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:06:17,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:06:17,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:06:17,880 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 10:06:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:06:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:06:17,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 10:06:17,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 10:06:17,906 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 10:06:17,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 10:06:17,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 10:06:17,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 10:06:17,907 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 3 states. [2018-11-10 10:06:17,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:06:17,928 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-10 10:06:17,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 10:06:17,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-10 10:06:17,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:06:17,930 INFO L225 Difference]: With dead ends: 20 [2018-11-10 10:06:17,930 INFO L226 Difference]: Without dead ends: 19 [2018-11-10 10:06:17,930 INFO L605 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 [2018-11-10 10:06:17,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-10 10:06:17,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-10 10:06:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-10 10:06:17,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-10 10:06:17,934 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 11 [2018-11-10 10:06:17,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:06:17,935 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-10 10:06:17,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 10:06:17,935 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-10 10:06:17,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 10:06:17,935 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:06:17,936 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:06:17,936 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 10:06:17,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:06:17,937 INFO L82 PathProgramCache]: Analyzing trace with hash -270353407, now seen corresponding path program 1 times [2018-11-10 10:06:17,937 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 10:06:17,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:06:17,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:06:17,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:06:17,939 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 10:06:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:06:18,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:06:18,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 10:06:18,017 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 10:06:18,018 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-11-10 10:06:18,020 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [15], [16], [18], [20], [22], [28], [29], [30] [2018-11-10 10:06:18,060 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 10:06:18,060 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 10:06:18,221 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 10:06:18,223 INFO L272 AbstractInterpreter]: Visited 12 different actions 63 times. Merged at 6 different actions 44 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 3 variables. [2018-11-10 10:06:18,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:06:18,231 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 10:06:18,271 INFO L219 lantSequenceWeakener]: Could never weaken! [2018-11-10 10:06:18,271 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 10:06:18,324 INFO L415 sIntCurrentIteration]: We unified 13 AI predicates to 13 [2018-11-10 10:06:18,324 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 10:06:18,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 10:06:18,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2018-11-10 10:06:18,325 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 10:06:18,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 10:06:18,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 10:06:18,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-10 10:06:18,325 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2018-11-10 10:06:18,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:06:18,441 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-10 10:06:18,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 10:06:18,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-11-10 10:06:18,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:06:18,442 INFO L225 Difference]: With dead ends: 19 [2018-11-10 10:06:18,442 INFO L226 Difference]: Without dead ends: 17 [2018-11-10 10:06:18,442 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-10 10:06:18,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-10 10:06:18,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-10 10:06:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-10 10:06:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-10 10:06:18,445 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-11-10 10:06:18,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:06:18,445 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-10 10:06:18,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 10:06:18,445 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-10 10:06:18,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 10:06:18,446 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:06:18,446 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:06:18,447 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 10:06:18,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:06:18,447 INFO L82 PathProgramCache]: Analyzing trace with hash -2111584829, now seen corresponding path program 1 times [2018-11-10 10:06:18,447 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 10:06:18,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:06:18,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:06:18,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:06:18,448 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 10:06:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:06:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:06:18,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 10:06:18,480 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 10:06:18,480 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-11-10 10:06:18,481 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [16], [18], [19], [20], [22], [28], [29], [30] [2018-11-10 10:06:18,482 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 10:06:18,482 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 10:06:18,533 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 10:06:18,533 INFO L272 AbstractInterpreter]: Visited 12 different actions 63 times. Merged at 6 different actions 44 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 3 variables. [2018-11-10 10:06:18,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:06:18,536 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 10:06:18,536 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 10:06:18,536 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/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 [2018-11-10 10:06:18,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:06:18,545 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 10:06:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:06:18,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 10:06:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:06:18,568 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 10:06:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:06:18,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 10:06:18,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-11-10 10:06:18,611 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 10:06:18,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 10:06:18,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 10:06:18,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 10:06:18,612 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 4 states. [2018-11-10 10:06:18,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:06:18,628 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-11-10 10:06:18,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 10:06:18,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-10 10:06:18,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:06:18,629 INFO L225 Difference]: With dead ends: 25 [2018-11-10 10:06:18,629 INFO L226 Difference]: Without dead ends: 24 [2018-11-10 10:06:18,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-10 10:06:18,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-10 10:06:18,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-11-10 10:06:18,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-10 10:06:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-10 10:06:18,633 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2018-11-10 10:06:18,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:06:18,633 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-10 10:06:18,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 10:06:18,633 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-10 10:06:18,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 10:06:18,634 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:06:18,634 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-10 10:06:18,634 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 10:06:18,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:06:18,634 INFO L82 PathProgramCache]: Analyzing trace with hash -305965063, now seen corresponding path program 2 times [2018-11-10 10:06:18,634 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 10:06:18,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:06:18,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:06:18,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:06:18,635 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 10:06:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:06:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:06:18,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 10:06:18,674 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 10:06:18,674 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 10:06:18,674 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 10:06:18,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 10:06:18,674 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/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 [2018-11-10 10:06:18,679 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 10:06:18,680 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 10:06:18,686 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-10 10:06:18,686 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 10:06:18,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 10:06:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:06:18,766 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 10:06:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:06:18,816 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 10:06:18,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 12 [2018-11-10 10:06:18,816 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 10:06:18,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 10:06:18,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 10:06:18,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-11-10 10:06:18,817 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 10 states. [2018-11-10 10:06:18,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:06:18,994 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2018-11-10 10:06:18,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 10:06:18,994 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-11-10 10:06:18,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:06:18,994 INFO L225 Difference]: With dead ends: 32 [2018-11-10 10:06:18,994 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 10:06:18,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2018-11-10 10:06:18,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 10:06:18,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 10:06:18,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 10:06:18,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 10:06:18,996 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-11-10 10:06:18,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:06:18,996 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 10:06:18,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 10:06:18,996 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 10:06:18,996 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 10:06:18,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 10:06:19,111 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 10:06:19,112 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 10:06:19,112 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 10:06:19,112 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 10:06:19,112 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 10:06:19,112 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 10:06:19,112 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 14 23) the Hoare annotation is: true [2018-11-10 10:06:19,112 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 14 23) no Hoare annotation was computed. [2018-11-10 10:06:19,112 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-10 10:06:19,112 INFO L425 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-11-10 10:06:19,112 INFO L425 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-10 10:06:19,112 INFO L425 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-11-10 10:06:19,112 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-10 10:06:19,112 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-10 10:06:19,113 INFO L425 ceAbstractionStarter]: For program point L18-1(lines 18 21) no Hoare annotation was computed. [2018-11-10 10:06:19,113 INFO L421 ceAbstractionStarter]: At program point L18-3(lines 18 21) the Hoare annotation is: (let ((.cse1 (* 2 main_~y~0)) (.cse3 (* 2 main_~x~0))) (let ((.cse0 (<= 0 (+ .cse3 4294967292))) (.cse2 (<= 2 .cse1))) (or (and .cse0 (<= (+ main_~x~0 main_~y~0) 2147483647) (<= .cse1 4294967294) .cse2) (and .cse2 (<= .cse3 4294967294) (<= 0 (+ main_~x~0 main_~y~0 2147483647)) (<= main_~y~0 1)) (and .cse0 (<= .cse3 4294967292) .cse2 (<= main_~y~0 2))))) [2018-11-10 10:06:19,113 INFO L425 ceAbstractionStarter]: For program point L18-4(lines 18 21) no Hoare annotation was computed. [2018-11-10 10:06:19,113 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 14 23) no Hoare annotation was computed. [2018-11-10 10:06:19,113 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2018-11-10 10:06:19,113 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2018-11-10 10:06:19,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:06:19 BoogieIcfgContainer [2018-11-10 10:06:19,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 10:06:19,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 10:06:19,122 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 10:06:19,122 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 10:06:19,122 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:06:17" (3/4) ... [2018-11-10 10:06:19,125 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 10:06:19,130 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 10:06:19,130 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 10:06:19,133 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-10 10:06:19,133 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 10:06:19,133 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 10:06:19,157 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7c4b9c3d-d509-469a-95f1-a0f37cebd272/bin-2019/utaipan/witness.graphml [2018-11-10 10:06:19,157 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 10:06:19,158 INFO L168 Benchmark]: Toolchain (without parser) took 1959.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 960.2 MB in the beginning and 959.6 MB in the end (delta: 626.4 kB). Peak memory consumption was 163.2 MB. Max. memory is 11.5 GB. [2018-11-10 10:06:19,159 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 10:06:19,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.13 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 10:06:19,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.68 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 10:06:19,160 INFO L168 Benchmark]: Boogie Preprocessor took 12.67 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 10:06:19,160 INFO L168 Benchmark]: RCFGBuilder took 158.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 948.4 MB in the beginning and 1.2 GB in the end (delta: -203.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2018-11-10 10:06:19,160 INFO L168 Benchmark]: TraceAbstraction took 1581.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 962.9 MB in the end (delta: 189.1 MB). Peak memory consumption was 189.1 MB. Max. memory is 11.5 GB. [2018-11-10 10:06:19,161 INFO L168 Benchmark]: Witness Printer took 35.51 ms. Allocated memory is still 1.2 GB. Free memory was 962.9 MB in the beginning and 959.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-10 10:06:19,163 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 156.13 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.68 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 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 is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 158.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 948.4 MB in the beginning and 1.2 GB in the end (delta: -203.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1581.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 962.9 MB in the end (delta: 189.1 MB). Peak memory consumption was 189.1 MB. Max. memory is 11.5 GB. * Witness Printer took 35.51 ms. Allocated memory is still 1.2 GB. Free memory was 962.9 MB in the beginning and 959.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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: 18]: Loop Invariant Derived loop invariant: ((((0 <= 2 * x + 4294967292 && x + y <= 2147483647) && 2 * y <= 4294967294) && 2 <= 2 * y) || (((2 <= 2 * y && 2 * x <= 4294967294) && 0 <= x + y + 2147483647) && y <= 1)) || (((0 <= 2 * x + 4294967292 && 2 * x <= 4294967292) && 2 <= 2 * y) && y <= 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 4 error locations. SAFE Result, 1.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 49 SDslu, 79 SDs, 0 SdLazy, 123 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 112 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.15384615384615385 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 9 NumberOfFragments, 69 HoareAnnotationTreeSize, 5 FomulaSimplifications, 110 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 94 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 7204 SizeOfPredicates, 4 NumberOfNonLiveVariables, 76 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 0/66 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...