./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7c08193784b646afd298f73ae6296b7af2e0cac1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 05:13:45,201 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 05:13:45,202 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 05:13:45,209 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 05:13:45,209 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 05:13:45,210 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 05:13:45,210 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 05:13:45,211 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 05:13:45,212 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 05:13:45,213 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 05:13:45,214 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 05:13:45,214 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 05:13:45,215 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 05:13:45,215 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 05:13:45,216 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 05:13:45,217 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 05:13:45,217 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 05:13:45,219 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 05:13:45,221 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 05:13:45,222 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 05:13:45,223 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 05:13:45,224 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 05:13:45,225 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 05:13:45,225 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 05:13:45,225 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 05:13:45,227 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 05:13:45,227 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 05:13:45,228 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 05:13:45,229 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 05:13:45,229 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 05:13:45,230 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 05:13:45,230 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 05:13:45,231 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 05:13:45,231 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 05:13:45,231 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 05:13:45,232 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 05:13:45,232 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-23 05:13:45,242 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 05:13:45,242 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 05:13:45,243 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 05:13:45,243 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 05:13:45,243 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 05:13:45,243 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 05:13:45,243 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 05:13:45,244 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 05:13:45,244 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 05:13:45,244 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 05:13:45,244 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 05:13:45,244 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 05:13:45,244 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 05:13:45,244 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 05:13:45,244 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 05:13:45,244 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 05:13:45,245 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 05:13:45,245 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 05:13:45,245 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 05:13:45,245 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 05:13:45,246 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 05:13:45,246 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 05:13:45,246 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 05:13:45,246 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 05:13:45,246 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 05:13:45,246 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 05:13:45,247 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 05:13:45,247 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 05:13:45,247 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 05:13:45,247 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer 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 -> Automizer 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 -> 7c08193784b646afd298f73ae6296b7af2e0cac1 [2018-11-23 05:13:45,270 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 05:13:45,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 05:13:45,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 05:13:45,283 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 05:13:45,283 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 05:13:45,284 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c [2018-11-23 05:13:45,321 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer/data/a41ab3998/abb84dfb659d4f5aaac0e3fbb7e7662e/FLAG39d1f4fc0 [2018-11-23 05:13:45,717 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 05:13:45,718 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c [2018-11-23 05:13:45,721 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer/data/a41ab3998/abb84dfb659d4f5aaac0e3fbb7e7662e/FLAG39d1f4fc0 [2018-11-23 05:13:45,732 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer/data/a41ab3998/abb84dfb659d4f5aaac0e3fbb7e7662e [2018-11-23 05:13:45,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 05:13:45,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 05:13:45,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 05:13:45,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 05:13:45,738 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 05:13:45,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:13:45" (1/1) ... [2018-11-23 05:13:45,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9ee6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:45, skipping insertion in model container [2018-11-23 05:13:45,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:13:45" (1/1) ... [2018-11-23 05:13:45,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 05:13:45,757 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 05:13:45,861 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:13:45,863 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 05:13:45,872 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:13:45,883 INFO L195 MainTranslator]: Completed translation [2018-11-23 05:13:45,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:45 WrapperNode [2018-11-23 05:13:45,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 05:13:45,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 05:13:45,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 05:13:45,885 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 05:13:45,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:45" (1/1) ... [2018-11-23 05:13:45,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:45" (1/1) ... [2018-11-23 05:13:45,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 05:13:45,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 05:13:45,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 05:13:45,900 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 05:13:45,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:45" (1/1) ... [2018-11-23 05:13:45,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:45" (1/1) ... [2018-11-23 05:13:45,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:45" (1/1) ... [2018-11-23 05:13:45,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:45" (1/1) ... [2018-11-23 05:13:45,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:45" (1/1) ... [2018-11-23 05:13:45,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:45" (1/1) ... [2018-11-23 05:13:45,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:45" (1/1) ... [2018-11-23 05:13:45,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 05:13:45,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 05:13:45,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 05:13:45,912 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 05:13:45,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer/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 [2018-11-23 05:13:45,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 05:13:45,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 05:13:45,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 05:13:45,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 05:13:45,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 05:13:45,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 05:13:46,087 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 05:13:46,087 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-23 05:13:46,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:13:46 BoogieIcfgContainer [2018-11-23 05:13:46,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 05:13:46,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 05:13:46,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 05:13:46,095 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 05:13:46,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:13:45" (1/3) ... [2018-11-23 05:13:46,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d99671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:13:46, skipping insertion in model container [2018-11-23 05:13:46,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:45" (2/3) ... [2018-11-23 05:13:46,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d99671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:13:46, skipping insertion in model container [2018-11-23 05:13:46,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:13:46" (3/3) ... [2018-11-23 05:13:46,097 INFO L112 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c [2018-11-23 05:13:46,103 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 05:13:46,108 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-23 05:13:46,117 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-23 05:13:46,138 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 05:13:46,138 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 05:13:46,138 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 05:13:46,138 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 05:13:46,138 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 05:13:46,139 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 05:13:46,139 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 05:13:46,139 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 05:13:46,139 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 05:13:46,150 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-23 05:13:46,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-23 05:13:46,154 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:13:46,154 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:13:46,156 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:13:46,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:13:46,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1374165426, now seen corresponding path program 1 times [2018-11-23 05:13:46,161 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:13:46,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:13:46,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:13:46,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:13:46,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:13:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:13:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:13:46,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:13:46,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 05:13:46,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 05:13:46,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 05:13:46,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:13:46,285 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2018-11-23 05:13:46,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:13:46,349 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2018-11-23 05:13:46,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:13:46,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-23 05:13:46,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:13:46,356 INFO L225 Difference]: With dead ends: 45 [2018-11-23 05:13:46,356 INFO L226 Difference]: Without dead ends: 22 [2018-11-23 05:13:46,359 INFO L631 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 [2018-11-23 05:13:46,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-23 05:13:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2018-11-23 05:13:46,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-23 05:13:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-11-23 05:13:46,385 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2018-11-23 05:13:46,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:13:46,385 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-23 05:13:46,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 05:13:46,386 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-11-23 05:13:46,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-23 05:13:46,386 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:13:46,386 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:13:46,386 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:13:46,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:13:46,387 INFO L82 PathProgramCache]: Analyzing trace with hash 350544817, now seen corresponding path program 1 times [2018-11-23 05:13:46,387 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:13:46,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:13:46,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:13:46,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:13:46,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:13:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:13:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:13:46,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:13:46,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 05:13:46,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 05:13:46,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 05:13:46,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:13:46,421 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2018-11-23 05:13:46,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:13:46,437 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2018-11-23 05:13:46,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:13:46,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-23 05:13:46,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:13:46,438 INFO L225 Difference]: With dead ends: 18 [2018-11-23 05:13:46,438 INFO L226 Difference]: Without dead ends: 17 [2018-11-23 05:13:46,438 INFO L631 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 [2018-11-23 05:13:46,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-23 05:13:46,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-23 05:13:46,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-23 05:13:46,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-11-23 05:13:46,441 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 9 [2018-11-23 05:13:46,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:13:46,441 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-11-23 05:13:46,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 05:13:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-11-23 05:13:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-23 05:13:46,442 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:13:46,442 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:13:46,442 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:13:46,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:13:46,442 INFO L82 PathProgramCache]: Analyzing trace with hash 350546515, now seen corresponding path program 1 times [2018-11-23 05:13:46,443 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:13:46,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:13:46,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:13:46,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:13:46,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:13:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:13:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:13:46,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:13:46,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 05:13:46,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 05:13:46,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 05:13:46,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:13:46,461 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2018-11-23 05:13:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:13:46,470 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2018-11-23 05:13:46,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:13:46,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-23 05:13:46,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:13:46,471 INFO L225 Difference]: With dead ends: 18 [2018-11-23 05:13:46,471 INFO L226 Difference]: Without dead ends: 17 [2018-11-23 05:13:46,471 INFO L631 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 [2018-11-23 05:13:46,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-23 05:13:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2018-11-23 05:13:46,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-23 05:13:46,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-11-23 05:13:46,475 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2018-11-23 05:13:46,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:13:46,475 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-11-23 05:13:46,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 05:13:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-11-23 05:13:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 05:13:46,475 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:13:46,476 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:13:46,476 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:13:46,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:13:46,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1867753438, now seen corresponding path program 1 times [2018-11-23 05:13:46,476 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:13:46,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:13:46,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:13:46,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:13:46,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:13:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:13:46,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 05:13:46,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:13:46,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 05:13:46,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 05:13:46,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 05:13:46,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:13:46,510 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2018-11-23 05:13:46,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:13:46,552 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2018-11-23 05:13:46,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 05:13:46,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-23 05:13:46,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:13:46,553 INFO L225 Difference]: With dead ends: 16 [2018-11-23 05:13:46,553 INFO L226 Difference]: Without dead ends: 15 [2018-11-23 05:13:46,553 INFO L631 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 [2018-11-23 05:13:46,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-23 05:13:46,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2018-11-23 05:13:46,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-23 05:13:46,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-11-23 05:13:46,557 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2018-11-23 05:13:46,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:13:46,557 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-11-23 05:13:46,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 05:13:46,557 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-11-23 05:13:46,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 05:13:46,557 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:13:46,558 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:13:46,558 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:13:46,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:13:46,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1867753493, now seen corresponding path program 1 times [2018-11-23 05:13:46,558 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:13:46,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:13:46,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:13:46,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:13:46,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:13:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:13:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:13:46,585 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:13:46,585 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer/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 [2018-11-23 05:13:46,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:13:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:13:46,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:13:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:13:46,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:13:46,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-23 05:13:46,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 05:13:46,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 05:13:46,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:13:46,641 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2018-11-23 05:13:46,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:13:46,664 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2018-11-23 05:13:46,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 05:13:46,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-23 05:13:46,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:13:46,665 INFO L225 Difference]: With dead ends: 25 [2018-11-23 05:13:46,665 INFO L226 Difference]: Without dead ends: 24 [2018-11-23 05:13:46,665 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:13:46,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-23 05:13:46,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 17. [2018-11-23 05:13:46,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-23 05:13:46,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2018-11-23 05:13:46,669 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2018-11-23 05:13:46,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:13:46,669 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-23 05:13:46,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 05:13:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2018-11-23 05:13:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 05:13:46,670 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:13:46,670 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:13:46,670 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:13:46,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:13:46,670 INFO L82 PathProgramCache]: Analyzing trace with hash 943045765, now seen corresponding path program 2 times [2018-11-23 05:13:46,670 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:13:46,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:13:46,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:13:46,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:13:46,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:13:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:13:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:13:46,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:13:46,709 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer/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 [2018-11-23 05:13:46,715 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 05:13:46,720 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-23 05:13:46,720 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:13:46,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:13:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 05:13:46,762 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:13:46,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-11-23 05:13:46,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 05:13:46,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 05:13:46,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-23 05:13:46,763 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 8 states. [2018-11-23 05:13:46,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:13:46,900 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2018-11-23 05:13:46,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 05:13:46,900 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-11-23 05:13:46,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:13:46,900 INFO L225 Difference]: With dead ends: 34 [2018-11-23 05:13:46,900 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 05:13:46,901 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2018-11-23 05:13:46,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 05:13:46,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 05:13:46,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 05:13:46,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 05:13:46,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-11-23 05:13:46,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:13:46,902 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 05:13:46,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 05:13:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 05:13:46,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 05:13:46,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 05:13:46,945 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 05:13:46,945 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 05:13:46,945 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 05:13:46,946 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 05:13:46,946 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 05:13:46,946 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 05:13:46,946 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 14 27) no Hoare annotation was computed. [2018-11-23 05:13:46,946 INFO L444 ceAbstractionStarter]: At program point L21-2(lines 21 23) the Hoare annotation is: (and (<= 0 main_~j~0) (<= main_~n~0 2147483647) (<= 0 (+ main_~i~0 2147483648)) (<= main_~i~0 2147483646)) [2018-11-23 05:13:46,946 INFO L448 ceAbstractionStarter]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2018-11-23 05:13:46,946 INFO L444 ceAbstractionStarter]: At program point L19-2(lines 19 25) the Hoare annotation is: (and (<= main_~n~0 2147483647) (<= 0 (+ main_~i~0 2147483648))) [2018-11-23 05:13:46,946 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-23 05:13:46,946 INFO L448 ceAbstractionStarter]: For program point L19-3(lines 19 25) no Hoare annotation was computed. [2018-11-23 05:13:46,947 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 14 27) no Hoare annotation was computed. [2018-11-23 05:13:46,947 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-23 05:13:46,947 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 14 27) the Hoare annotation is: true [2018-11-23 05:13:46,947 INFO L448 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-23 05:13:46,947 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-23 05:13:46,947 INFO L448 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-23 05:13:46,947 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-23 05:13:46,947 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-23 05:13:46,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 05:13:46 BoogieIcfgContainer [2018-11-23 05:13:46,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 05:13:46,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 05:13:46,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 05:13:46,957 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 05:13:46,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:13:46" (3/4) ... [2018-11-23 05:13:46,959 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 05:13:46,964 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 05:13:46,964 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 05:13:46,968 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-23 05:13:46,968 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 05:13:46,968 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 05:13:46,999 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_14a7bbeb-2ffd-4e42-881a-9f8bd297d607/bin-2019/uautomizer/witness.graphml [2018-11-23 05:13:46,999 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 05:13:47,000 INFO L168 Benchmark]: Toolchain (without parser) took 1265.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 959.2 MB in the beginning and 1.0 GB in the end (delta: -47.1 MB). Peak memory consumption was 75.6 MB. Max. memory is 11.5 GB. [2018-11-23 05:13:47,001 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 05:13:47,001 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.20 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:13:47,001 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.33 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 05:13:47,002 INFO L168 Benchmark]: Boogie Preprocessor took 11.63 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:13:47,002 INFO L168 Benchmark]: RCFGBuilder took 176.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -162.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-23 05:13:47,002 INFO L168 Benchmark]: TraceAbstraction took 867.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.5 MB). Peak memory consumption was 99.5 MB. Max. memory is 11.5 GB. [2018-11-23 05:13:47,002 INFO L168 Benchmark]: Witness Printer took 42.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:13:47,004 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 148.20 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 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 15.33 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.63 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 176.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -162.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 867.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.5 MB). Peak memory consumption was 99.5 MB. Max. memory is 11.5 GB. * Witness Printer took 42.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.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: 24]: 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: 24]: 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: 19]: Loop Invariant Derived loop invariant: n <= 2147483647 && 0 <= i + 2147483648 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((0 <= j && n <= 2147483647) && 0 <= i + 2147483648) && i <= 2147483646 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 4 error locations. SAFE Result, 0.8s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 60 SDtfs, 90 SDslu, 66 SDs, 0 SdLazy, 95 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 16 NumberOfFragments, 28 HoareAnnotationTreeSize, 6 FomulaSimplifications, 417 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 87 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 1795 SizeOfPredicates, 2 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 6/19 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...