./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/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 32bit --witnessprinter.graph.data.programhash 9918b49e0d76e4ce36b6a6760021b33460a8ae9b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 11:06:37,699 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 11:06:37,700 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 11:06:37,706 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 11:06:37,706 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 11:06:37,706 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 11:06:37,707 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 11:06:37,708 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 11:06:37,708 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 11:06:37,709 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 11:06:37,709 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 11:06:37,709 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 11:06:37,710 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 11:06:37,710 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 11:06:37,711 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 11:06:37,711 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 11:06:37,711 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 11:06:37,712 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 11:06:37,713 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 11:06:37,714 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 11:06:37,714 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 11:06:37,715 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 11:06:37,716 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 11:06:37,716 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 11:06:37,716 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 11:06:37,717 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 11:06:37,717 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 11:06:37,717 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 11:06:37,718 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 11:06:37,718 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 11:06:37,718 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 11:06:37,719 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 11:06:37,719 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 11:06:37,719 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 11:06:37,719 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 11:06:37,720 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 11:06:37,720 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2018-12-09 11:06:37,727 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 11:06:37,727 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 11:06:37,727 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 11:06:37,727 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 11:06:37,728 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 11:06:37,728 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 11:06:37,728 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 11:06:37,728 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 11:06:37,728 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 11:06:37,728 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 11:06:37,728 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 11:06:37,728 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 11:06:37,729 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 11:06:37,729 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 11:06:37,729 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 11:06:37,729 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 11:06:37,729 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-09 11:06:37,729 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 11:06:37,729 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 11:06:37,729 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 11:06:37,729 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 11:06:37,729 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 11:06:37,729 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 11:06:37,729 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 11:06:37,730 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 11:06:37,730 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 11:06:37,730 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 11:06:37,730 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 11:06:37,730 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 11:06:37,730 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 11:06:37,730 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 11:06:37,730 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 11:06:37,730 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_11046403-49dc-424d-8fae-f12ace473862/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9918b49e0d76e4ce36b6a6760021b33460a8ae9b [2018-12-09 11:06:37,747 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 11:06:37,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 11:06:37,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 11:06:37,756 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 11:06:37,756 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 11:06:37,756 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i [2018-12-09 11:06:37,790 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/data/081f78154/97b3584158ab441399b16bede08924ac/FLAG7fbad900f [2018-12-09 11:06:38,077 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 11:06:38,077 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i [2018-12-09 11:06:38,080 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/data/081f78154/97b3584158ab441399b16bede08924ac/FLAG7fbad900f [2018-12-09 11:06:38,088 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/data/081f78154/97b3584158ab441399b16bede08924ac [2018-12-09 11:06:38,090 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 11:06:38,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 11:06:38,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 11:06:38,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 11:06:38,094 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 11:06:38,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:06:38" (1/1) ... [2018-12-09 11:06:38,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d01f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:06:38, skipping insertion in model container [2018-12-09 11:06:38,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:06:38" (1/1) ... [2018-12-09 11:06:38,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 11:06:38,115 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 11:06:38,198 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:06:38,200 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 11:06:38,209 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:06:38,217 INFO L195 MainTranslator]: Completed translation [2018-12-09 11:06:38,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:06:38 WrapperNode [2018-12-09 11:06:38,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 11:06:38,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 11:06:38,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 11:06:38,218 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 11:06:38,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:06:38" (1/1) ... [2018-12-09 11:06:38,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:06:38" (1/1) ... [2018-12-09 11:06:38,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 11:06:38,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 11:06:38,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 11:06:38,230 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 11:06:38,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:06:38" (1/1) ... [2018-12-09 11:06:38,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:06:38" (1/1) ... [2018-12-09 11:06:38,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:06:38" (1/1) ... [2018-12-09 11:06:38,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:06:38" (1/1) ... [2018-12-09 11:06:38,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:06:38" (1/1) ... [2018-12-09 11:06:38,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:06:38" (1/1) ... [2018-12-09 11:06:38,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:06:38" (1/1) ... [2018-12-09 11:06:38,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 11:06:38,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 11:06:38,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 11:06:38,243 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 11:06:38,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:06:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/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 [2018-12-09 11:06:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 11:06:38,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 11:06:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 11:06:38,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 11:06:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 11:06:38,307 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 11:06:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 11:06:38,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 11:06:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure gcd_test [2018-12-09 11:06:38,308 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd_test [2018-12-09 11:06:38,427 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 11:06:38,427 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 11:06:38,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:06:38 BoogieIcfgContainer [2018-12-09 11:06:38,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 11:06:38,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 11:06:38,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 11:06:38,430 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 11:06:38,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:06:38" (1/3) ... [2018-12-09 11:06:38,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619ed1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:06:38, skipping insertion in model container [2018-12-09 11:06:38,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:06:38" (2/3) ... [2018-12-09 11:06:38,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619ed1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:06:38, skipping insertion in model container [2018-12-09 11:06:38,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:06:38" (3/3) ... [2018-12-09 11:06:38,432 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4_true-unreach-call_true-no-overflow_true-termination.i [2018-12-09 11:06:38,438 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 11:06:38,443 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-12-09 11:06:38,453 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-12-09 11:06:38,471 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 11:06:38,471 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 11:06:38,472 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 11:06:38,472 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 11:06:38,472 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 11:06:38,472 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 11:06:38,472 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 11:06:38,472 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 11:06:38,472 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 11:06:38,483 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-12-09 11:06:38,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 11:06:38,486 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:06:38,487 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:06:38,488 INFO L423 AbstractCegarLoop]: === Iteration 1 === [gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:06:38,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:06:38,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1670294891, now seen corresponding path program 1 times [2018-12-09 11:06:38,493 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:06:38,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:06:38,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:38,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:06:38,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:38,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:06:38,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:06:38,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:06:38,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 11:06:38,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 11:06:38,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 11:06:38,598 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2018-12-09 11:06:38,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:06:38,663 INFO L93 Difference]: Finished difference Result 91 states and 112 transitions. [2018-12-09 11:06:38,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 11:06:38,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-12-09 11:06:38,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:06:38,669 INFO L225 Difference]: With dead ends: 91 [2018-12-09 11:06:38,669 INFO L226 Difference]: Without dead ends: 34 [2018-12-09 11:06:38,671 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:06:38,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-09 11:06:38,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2018-12-09 11:06:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-09 11:06:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-12-09 11:06:38,693 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 9 [2018-12-09 11:06:38,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:06:38,693 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-12-09 11:06:38,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 11:06:38,693 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-12-09 11:06:38,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 11:06:38,694 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:06:38,694 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:06:38,694 INFO L423 AbstractCegarLoop]: === Iteration 2 === [gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:06:38,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:06:38,694 INFO L82 PathProgramCache]: Analyzing trace with hash -239527988, now seen corresponding path program 1 times [2018-12-09 11:06:38,694 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:06:38,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:06:38,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:38,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:06:38,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:38,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:06:38,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:06:38,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:06:38,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 11:06:38,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 11:06:38,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 11:06:38,723 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 5 states. [2018-12-09 11:06:38,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:06:38,759 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-12-09 11:06:38,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 11:06:38,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-12-09 11:06:38,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:06:38,760 INFO L225 Difference]: With dead ends: 45 [2018-12-09 11:06:38,760 INFO L226 Difference]: Without dead ends: 30 [2018-12-09 11:06:38,761 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:06:38,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-09 11:06:38,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2018-12-09 11:06:38,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-09 11:06:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-12-09 11:06:38,765 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2018-12-09 11:06:38,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:06:38,765 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-12-09 11:06:38,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 11:06:38,765 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-12-09 11:06:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 11:06:38,765 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:06:38,766 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:06:38,766 INFO L423 AbstractCegarLoop]: === Iteration 3 === [gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:06:38,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:06:38,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1831717912, now seen corresponding path program 1 times [2018-12-09 11:06:38,766 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:06:38,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:06:38,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:38,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:06:38,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:06:38,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:06:38,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 11:06:38,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 11:06:38,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 11:06:38,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:06:38,795 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2018-12-09 11:06:38,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:06:38,843 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2018-12-09 11:06:38,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 11:06:38,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-12-09 11:06:38,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:06:38,844 INFO L225 Difference]: With dead ends: 34 [2018-12-09 11:06:38,844 INFO L226 Difference]: Without dead ends: 32 [2018-12-09 11:06:38,845 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-12-09 11:06:38,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-09 11:06:38,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2018-12-09 11:06:38,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-09 11:06:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-12-09 11:06:38,850 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2018-12-09 11:06:38,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:06:38,850 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-12-09 11:06:38,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 11:06:38,850 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-12-09 11:06:38,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 11:06:38,850 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:06:38,851 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:06:38,851 INFO L423 AbstractCegarLoop]: === Iteration 4 === [gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:06:38,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:06:38,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1831718104, now seen corresponding path program 1 times [2018-12-09 11:06:38,851 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:06:38,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:06:38,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:38,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:06:38,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:06:38,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:06:38,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 11:06:38,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 11:06:38,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 11:06:38,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:06:38,877 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2018-12-09 11:06:38,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:06:38,922 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-12-09 11:06:38,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 11:06:38,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-12-09 11:06:38,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:06:38,923 INFO L225 Difference]: With dead ends: 33 [2018-12-09 11:06:38,923 INFO L226 Difference]: Without dead ends: 31 [2018-12-09 11:06:38,923 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-12-09 11:06:38,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-09 11:06:38,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2018-12-09 11:06:38,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-09 11:06:38,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-12-09 11:06:38,926 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2018-12-09 11:06:38,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:06:38,926 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-12-09 11:06:38,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 11:06:38,926 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-12-09 11:06:38,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 11:06:38,926 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:06:38,926 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:06:38,927 INFO L423 AbstractCegarLoop]: === Iteration 5 === [gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:06:38,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:06:38,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1250699491, now seen corresponding path program 1 times [2018-12-09 11:06:38,927 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:06:38,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:06:38,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:38,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:06:38,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:06:38,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:06:38,963 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/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 [2018-12-09 11:06:38,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:06:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:38,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:06:39,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 11:06:39,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 11:06:39,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2018-12-09 11:06:39,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 11:06:39,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 11:06:39,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-12-09 11:06:39,042 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 9 states. [2018-12-09 11:06:39,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:06:39,080 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-12-09 11:06:39,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 11:06:39,080 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2018-12-09 11:06:39,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:06:39,080 INFO L225 Difference]: With dead ends: 31 [2018-12-09 11:06:39,081 INFO L226 Difference]: Without dead ends: 22 [2018-12-09 11:06:39,081 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-12-09 11:06:39,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-09 11:06:39,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-12-09 11:06:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-09 11:06:39,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-12-09 11:06:39,083 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2018-12-09 11:06:39,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:06:39,083 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-12-09 11:06:39,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 11:06:39,083 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-12-09 11:06:39,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 11:06:39,084 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:06:39,084 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:06:39,084 INFO L423 AbstractCegarLoop]: === Iteration 6 === [gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:06:39,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:06:39,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1428194269, now seen corresponding path program 1 times [2018-12-09 11:06:39,084 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:06:39,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:06:39,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:39,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:06:39,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:39,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:06:39,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:06:39,111 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/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 [2018-12-09 11:06:39,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:06:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:39,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:06:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:06:39,166 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 11:06:39,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2018-12-09 11:06:39,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 11:06:39,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 11:06:39,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 11:06:39,167 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 11 states. [2018-12-09 11:06:39,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:06:39,269 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-12-09 11:06:39,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 11:06:39,269 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2018-12-09 11:06:39,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:06:39,270 INFO L225 Difference]: With dead ends: 51 [2018-12-09 11:06:39,270 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 11:06:39,271 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-12-09 11:06:39,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 11:06:39,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2018-12-09 11:06:39,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-09 11:06:39,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-12-09 11:06:39,276 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 17 [2018-12-09 11:06:39,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:06:39,277 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-12-09 11:06:39,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 11:06:39,277 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-12-09 11:06:39,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 11:06:39,277 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:06:39,278 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:06:39,278 INFO L423 AbstractCegarLoop]: === Iteration 7 === [gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:06:39,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:06:39,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1428194461, now seen corresponding path program 1 times [2018-12-09 11:06:39,278 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:06:39,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:06:39,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:39,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:06:39,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:06:39,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:06:39,299 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 11:06:39,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:06:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:39,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:06:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:06:39,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 11:06:39,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2018-12-09 11:06:39,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 11:06:39,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 11:06:39,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-12-09 11:06:39,358 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 9 states. [2018-12-09 11:06:39,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:06:39,428 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 11:06:39,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 11:06:39,428 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2018-12-09 11:06:39,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:06:39,429 INFO L225 Difference]: With dead ends: 49 [2018-12-09 11:06:39,429 INFO L226 Difference]: Without dead ends: 48 [2018-12-09 11:06:39,430 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2018-12-09 11:06:39,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-09 11:06:39,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-12-09 11:06:39,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-09 11:06:39,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-12-09 11:06:39,435 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 17 [2018-12-09 11:06:39,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:06:39,435 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-12-09 11:06:39,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 11:06:39,435 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-12-09 11:06:39,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 11:06:39,436 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:06:39,436 INFO L402 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:06:39,436 INFO L423 AbstractCegarLoop]: === Iteration 8 === [gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:06:39,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:06:39,436 INFO L82 PathProgramCache]: Analyzing trace with hash 518481683, now seen corresponding path program 1 times [2018-12-09 11:06:39,436 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:06:39,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:06:39,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:39,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:06:39,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-09 11:06:39,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:06:39,482 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 11:06:39,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:06:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:39,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:06:39,553 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 11:06:39,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 11:06:39,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-12-09 11:06:39,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 11:06:39,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 11:06:39,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-12-09 11:06:39,569 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 13 states. [2018-12-09 11:06:39,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:06:39,734 INFO L93 Difference]: Finished difference Result 101 states and 122 transitions. [2018-12-09 11:06:39,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 11:06:39,735 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2018-12-09 11:06:39,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:06:39,735 INFO L225 Difference]: With dead ends: 101 [2018-12-09 11:06:39,735 INFO L226 Difference]: Without dead ends: 76 [2018-12-09 11:06:39,736 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2018-12-09 11:06:39,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-12-09 11:06:39,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 53. [2018-12-09 11:06:39,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-12-09 11:06:39,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2018-12-09 11:06:39,740 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 25 [2018-12-09 11:06:39,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:06:39,741 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2018-12-09 11:06:39,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 11:06:39,741 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2018-12-09 11:06:39,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-09 11:06:39,741 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:06:39,741 INFO L402 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:06:39,741 INFO L423 AbstractCegarLoop]: === Iteration 9 === [gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:06:39,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:06:39,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1145508093, now seen corresponding path program 2 times [2018-12-09 11:06:39,741 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:06:39,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:06:39,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:39,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:06:39,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-09 11:06:39,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:06:39,783 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 11:06:39,788 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 11:06:39,794 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 11:06:39,795 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:06:39,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:06:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:06:39,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 11:06:39,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 14 [2018-12-09 11:06:39,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 11:06:39,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 11:06:39,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-12-09 11:06:39,898 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 14 states. [2018-12-09 11:06:40,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:06:40,134 INFO L93 Difference]: Finished difference Result 106 states and 127 transitions. [2018-12-09 11:06:40,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-09 11:06:40,135 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2018-12-09 11:06:40,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:06:40,136 INFO L225 Difference]: With dead ends: 106 [2018-12-09 11:06:40,136 INFO L226 Difference]: Without dead ends: 86 [2018-12-09 11:06:40,137 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2018-12-09 11:06:40,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-12-09 11:06:40,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2018-12-09 11:06:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-12-09 11:06:40,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2018-12-09 11:06:40,144 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 33 [2018-12-09 11:06:40,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:06:40,145 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2018-12-09 11:06:40,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 11:06:40,145 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2018-12-09 11:06:40,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-09 11:06:40,145 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:06:40,146 INFO L402 BasicCegarLoop]: trace histogram [6, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:06:40,146 INFO L423 AbstractCegarLoop]: === Iteration 10 === [gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:06:40,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:06:40,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1145508285, now seen corresponding path program 1 times [2018-12-09 11:06:40,146 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:06:40,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:06:40,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:40,147 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:06:40,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-12-09 11:06:40,173 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:06:40,173 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 11:06:40,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:06:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:40,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:06:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:06:40,307 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 11:06:40,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9] total 12 [2018-12-09 11:06:40,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 11:06:40,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 11:06:40,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-12-09 11:06:40,308 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand 13 states. [2018-12-09 11:06:40,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:06:40,458 INFO L93 Difference]: Finished difference Result 99 states and 120 transitions. [2018-12-09 11:06:40,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 11:06:40,458 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2018-12-09 11:06:40,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:06:40,459 INFO L225 Difference]: With dead ends: 99 [2018-12-09 11:06:40,459 INFO L226 Difference]: Without dead ends: 63 [2018-12-09 11:06:40,459 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2018-12-09 11:06:40,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-12-09 11:06:40,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2018-12-09 11:06:40,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-12-09 11:06:40,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2018-12-09 11:06:40,464 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 33 [2018-12-09 11:06:40,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:06:40,464 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2018-12-09 11:06:40,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 11:06:40,464 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2018-12-09 11:06:40,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-12-09 11:06:40,465 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:06:40,465 INFO L402 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:06:40,465 INFO L423 AbstractCegarLoop]: === Iteration 11 === [gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:06:40,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:06:40,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1903926841, now seen corresponding path program 2 times [2018-12-09 11:06:40,465 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:06:40,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:06:40,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:40,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:06:40,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:40,487 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 47 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-12-09 11:06:40,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:06:40,487 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 11:06:40,494 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 11:06:40,501 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 11:06:40,502 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:06:40,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:06:40,612 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:06:40,626 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 11:06:40,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 15 [2018-12-09 11:06:40,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-09 11:06:40,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-09 11:06:40,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2018-12-09 11:06:40,626 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 16 states. [2018-12-09 11:06:41,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:06:41,088 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2018-12-09 11:06:41,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-09 11:06:41,089 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2018-12-09 11:06:41,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:06:41,089 INFO L225 Difference]: With dead ends: 72 [2018-12-09 11:06:41,089 INFO L226 Difference]: Without dead ends: 71 [2018-12-09 11:06:41,090 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2018-12-09 11:06:41,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-12-09 11:06:41,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2018-12-09 11:06:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-12-09 11:06:41,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2018-12-09 11:06:41,096 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 41 [2018-12-09 11:06:41,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:06:41,096 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2018-12-09 11:06:41,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-09 11:06:41,096 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2018-12-09 11:06:41,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-09 11:06:41,097 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:06:41,097 INFO L402 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:06:41,097 INFO L423 AbstractCegarLoop]: === Iteration 12 === [gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 11:06:41,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:06:41,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1770209325, now seen corresponding path program 3 times [2018-12-09 11:06:41,098 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:06:41,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:06:41,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:41,098 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:06:41,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:06:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:06:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-12-09 11:06:41,129 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:06:41,129 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 11:06:41,134 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 11:06:41,139 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 11:06:41,140 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 11:06:41,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:06:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 97 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-12-09 11:06:41,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 11:06:41,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-12-09 11:06:41,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 11:06:41,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 11:06:41,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-12-09 11:06:41,180 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 10 states. [2018-12-09 11:06:41,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:06:41,242 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2018-12-09 11:06:41,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 11:06:41,243 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2018-12-09 11:06:41,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:06:41,243 INFO L225 Difference]: With dead ends: 58 [2018-12-09 11:06:41,243 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 11:06:41,243 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2018-12-09 11:06:41,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 11:06:41,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 11:06:41,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 11:06:41,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 11:06:41,244 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2018-12-09 11:06:41,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:06:41,244 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 11:06:41,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 11:06:41,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 11:06:41,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 11:06:41,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 11:06:41,384 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 11:06:41,384 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 11:06:41,384 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 11:06:41,384 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 11:06:41,384 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 11:06:41,384 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 11:06:41,384 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 30 46) the Hoare annotation is: true [2018-12-09 11:06:41,385 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 30 46) no Hoare annotation was computed. [2018-12-09 11:06:41,385 INFO L448 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-12-09 11:06:41,385 INFO L444 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (<= 63 main_~x~0) [2018-12-09 11:06:41,385 INFO L444 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: (<= 63 main_~x~0) [2018-12-09 11:06:41,385 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 30 46) no Hoare annotation was computed. [2018-12-09 11:06:41,385 INFO L444 ceAbstractionStarter]: At program point L41-1(line 41) the Hoare annotation is: (<= 63 main_~x~0) [2018-12-09 11:06:41,385 INFO L444 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: (and (<= 63 main_~x~0) (<= 18 main_~y~0) (<= main_~x~0 63) (<= main_~y~0 18)) [2018-12-09 11:06:41,385 INFO L448 ceAbstractionStarter]: For program point L39-1(line 39) no Hoare annotation was computed. [2018-12-09 11:06:41,385 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2018-12-09 11:06:41,385 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2018-12-09 11:06:41,386 INFO L448 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2018-12-09 11:06:41,386 INFO L448 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-12-09 11:06:41,386 INFO L448 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2018-12-09 11:06:41,386 INFO L448 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-12-09 11:06:41,386 INFO L448 ceAbstractionStarter]: For program point gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2018-12-09 11:06:41,386 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-12-09 11:06:41,386 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-12-09 11:06:41,386 INFO L448 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-12-09 11:06:41,386 INFO L448 ceAbstractionStarter]: For program point gcd_testEXIT(lines 10 27) no Hoare annotation was computed. [2018-12-09 11:06:41,386 INFO L448 ceAbstractionStarter]: For program point gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 12) no Hoare annotation was computed. [2018-12-09 11:06:41,386 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2018-12-09 11:06:41,386 INFO L448 ceAbstractionStarter]: For program point gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2018-12-09 11:06:41,387 INFO L448 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-12-09 11:06:41,387 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-12-09 11:06:41,387 INFO L448 ceAbstractionStarter]: For program point L13-3(lines 11 27) no Hoare annotation was computed. [2018-12-09 11:06:41,387 INFO L448 ceAbstractionStarter]: For program point gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2018-12-09 11:06:41,387 INFO L448 ceAbstractionStarter]: For program point gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-12-09 11:06:41,387 INFO L451 ceAbstractionStarter]: At program point gcd_testENTRY(lines 10 27) the Hoare annotation is: true [2018-12-09 11:06:41,387 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2018-12-09 11:06:41,387 INFO L444 ceAbstractionStarter]: At program point L20-2(lines 19 25) the Hoare annotation is: (or (< |gcd_test_#in~b| 18) (< 63 |gcd_test_#in~a|) (< |gcd_test_#in~a| 63) (< 18 |gcd_test_#in~b|) (and (<= 0 gcd_test_~b) (<= 1 gcd_test_~a) (<= gcd_test_~a 2147483647) (<= gcd_test_~b 2147483646))) [2018-12-09 11:06:41,387 INFO L448 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2018-12-09 11:06:41,387 INFO L448 ceAbstractionStarter]: For program point L12-1(line 12) no Hoare annotation was computed. [2018-12-09 11:06:41,387 INFO L448 ceAbstractionStarter]: For program point L12-2(line 12) no Hoare annotation was computed. [2018-12-09 11:06:41,387 INFO L448 ceAbstractionStarter]: For program point L12-4(lines 11 27) no Hoare annotation was computed. [2018-12-09 11:06:41,387 INFO L448 ceAbstractionStarter]: For program point gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2018-12-09 11:06:41,387 INFO L448 ceAbstractionStarter]: For program point gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-12-09 11:06:41,387 INFO L448 ceAbstractionStarter]: For program point gcd_testFINAL(lines 10 27) no Hoare annotation was computed. [2018-12-09 11:06:41,387 INFO L448 ceAbstractionStarter]: For program point gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 12) no Hoare annotation was computed. [2018-12-09 11:06:41,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:06:41 BoogieIcfgContainer [2018-12-09 11:06:41,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 11:06:41,397 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 11:06:41,397 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 11:06:41,397 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 11:06:41,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:06:38" (3/4) ... [2018-12-09 11:06:41,401 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 11:06:41,406 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 11:06:41,406 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 11:06:41,406 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-09 11:06:41,406 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd_test [2018-12-09 11:06:41,410 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-09 11:06:41,410 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 11:06:41,410 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 11:06:41,430 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(b) < 18 || 63 < \old(a)) || \old(a) < 63) || 18 < \old(b)) || (((0 <= b && 1 <= a) && a <= 2147483647) && b <= 2147483646) [2018-12-09 11:06:41,445 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_11046403-49dc-424d-8fae-f12ace473862/bin-2019/uautomizer/witness.graphml [2018-12-09 11:06:41,445 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 11:06:41,445 INFO L168 Benchmark]: Toolchain (without parser) took 3355.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 952.2 MB in the beginning and 1.0 GB in the end (delta: -67.4 MB). Peak memory consumption was 70.4 MB. Max. memory is 11.5 GB. [2018-12-09 11:06:41,447 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:06:41,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 126.25 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 11:06:41,447 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.91 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:06:41,447 INFO L168 Benchmark]: Boogie Preprocessor took 13.03 ms. Allocated memory is still 1.0 GB. Free memory was 941.5 MB in the beginning and 938.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 11:06:41,448 INFO L168 Benchmark]: RCFGBuilder took 184.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 938.8 MB in the beginning and 1.1 GB in the end (delta: -137.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-09 11:06:41,448 INFO L168 Benchmark]: TraceAbstraction took 2968.42 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.9 MB). Peak memory consumption was 94.4 MB. Max. memory is 11.5 GB. [2018-12-09 11:06:41,448 INFO L168 Benchmark]: Witness Printer took 47.86 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: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. [2018-12-09 11:06:41,450 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 126.25 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.5 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 11.91 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.03 ms. Allocated memory is still 1.0 GB. Free memory was 941.5 MB in the beginning and 938.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 184.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 938.8 MB in the beginning and 1.1 GB in the end (delta: -137.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2968.42 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.9 MB). Peak memory consumption was 94.4 MB. Max. memory is 11.5 GB. * Witness Printer took 47.86 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: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((\old(b) < 18 || 63 < \old(a)) || \old(a) < 63) || 18 < \old(b)) || (((0 <= b && 1 <= a) && a <= 2147483647) && b <= 2147483646) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 8 error locations. SAFE Result, 2.9s OverallTime, 12 OverallIterations, 12 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 113 SDtfs, 711 SDslu, 451 SDs, 0 SdLazy, 1114 SolverSat, 187 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 378 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=9, 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, 12 MinimizatonAttempts, 106 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 16 PreInvPairs, 31 NumberOfFragments, 58 HoareAnnotationTreeSize, 16 FomulaSimplifications, 4245 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 637 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 525 NumberOfCodeBlocks, 489 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 505 ConstructedInterpolants, 28 QuantifiedInterpolants, 72635 SizeOfPredicates, 21 NumberOfNonLiveVariables, 390 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 562/748 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...