./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_39d103a5-0988-4ad3-a510-ac7e98c73c0a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_39d103a5-0988-4ad3-a510-ac7e98c73c0a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_39d103a5-0988-4ad3-a510-ac7e98c73c0a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_39d103a5-0988-4ad3-a510-ac7e98c73c0a/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_39d103a5-0988-4ad3-a510-ac7e98c73c0a/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_39d103a5-0988-4ad3-a510-ac7e98c73c0a/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 11:02:06,090 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:02:06,091 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:02:06,098 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:02:06,099 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:02:06,099 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:02:06,100 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:02:06,102 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:02:06,103 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:02:06,104 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:02:06,105 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:02:06,105 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:02:06,106 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:02:06,107 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:02:06,108 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:02:06,108 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:02:06,109 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:02:06,110 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:02:06,112 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:02:06,113 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:02:06,114 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:02:06,115 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:02:06,117 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:02:06,117 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:02:06,117 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:02:06,118 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:02:06,119 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:02:06,119 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:02:06,120 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:02:06,121 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:02:06,121 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:02:06,122 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:02:06,122 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:02:06,122 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:02:06,123 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:02:06,124 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:02:06,124 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_39d103a5-0988-4ad3-a510-ac7e98c73c0a/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-18 11:02:06,134 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:02:06,134 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:02:06,135 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:02:06,135 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 11:02:06,135 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 11:02:06,136 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 11:02:06,136 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 11:02:06,136 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:02:06,136 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 11:02:06,136 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:02:06,136 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:02:06,136 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:02:06,137 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:02:06,137 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:02:06,137 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 11:02:06,137 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:02:06,137 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:02:06,137 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:02:06,137 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:02:06,138 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:02:06,138 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:02:06,138 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:02:06,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:02:06,138 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:02:06,138 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:02:06,138 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:02:06,139 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 11:02:06,139 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:02:06,139 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:02:06,139 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_39d103a5-0988-4ad3-a510-ac7e98c73c0a/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 [2018-11-18 11:02:06,164 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:02:06,171 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:02:06,173 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:02:06,174 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:02:06,174 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:02:06,175 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_39d103a5-0988-4ad3-a510-ac7e98c73c0a/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c [2018-11-18 11:02:06,213 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_39d103a5-0988-4ad3-a510-ac7e98c73c0a/bin-2019/uautomizer/data/591f4a8b5/1ec05091b0414711b142f2c8fb9fd9bb/FLAG6324bba1d [2018-11-18 11:02:06,616 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:02:06,616 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_39d103a5-0988-4ad3-a510-ac7e98c73c0a/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c [2018-11-18 11:02:06,620 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_39d103a5-0988-4ad3-a510-ac7e98c73c0a/bin-2019/uautomizer/data/591f4a8b5/1ec05091b0414711b142f2c8fb9fd9bb/FLAG6324bba1d [2018-11-18 11:02:06,629 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_39d103a5-0988-4ad3-a510-ac7e98c73c0a/bin-2019/uautomizer/data/591f4a8b5/1ec05091b0414711b142f2c8fb9fd9bb [2018-11-18 11:02:06,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:02:06,632 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 11:02:06,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:02:06,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:02:06,636 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:02:06,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:02:06" (1/1) ... [2018-11-18 11:02:06,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da0b297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:02:06, skipping insertion in model container [2018-11-18 11:02:06,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:02:06" (1/1) ... [2018-11-18 11:02:06,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:02:06,659 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:02:06,781 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:02:06,783 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:02:06,792 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:02:06,800 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:02:06,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:02:06 WrapperNode [2018-11-18 11:02:06,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:02:06,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:02:06,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:02:06,801 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:02:06,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:02:06" (1/1) ... [2018-11-18 11:02:06,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:02:06" (1/1) ... [2018-11-18 11:02:06,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:02:06" (1/1) ... [2018-11-18 11:02:06,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:02:06" (1/1) ... [2018-11-18 11:02:06,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:02:06" (1/1) ... [2018-11-18 11:02:06,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:02:06" (1/1) ... [2018-11-18 11:02:06,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:02:06" (1/1) ... [2018-11-18 11:02:06,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:02:06,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:02:06,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:02:06,818 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:02:06,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:02:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_39d103a5-0988-4ad3-a510-ac7e98c73c0a/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:02:06,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:02:06,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:02:06,887 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:02:06,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 11:02:06,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:02:06,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:02:06,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:02:06,977 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:02:06,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:02:06 BoogieIcfgContainer [2018-11-18 11:02:06,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:02:06,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:02:06,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:02:06,980 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:02:06,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:02:06" (1/3) ... [2018-11-18 11:02:06,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1daa8702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:02:06, skipping insertion in model container [2018-11-18 11:02:06,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:02:06" (2/3) ... [2018-11-18 11:02:06,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1daa8702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:02:06, skipping insertion in model container [2018-11-18 11:02:06,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:02:06" (3/3) ... [2018-11-18 11:02:06,983 INFO L112 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c [2018-11-18 11:02:06,988 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:02:06,993 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-18 11:02:07,001 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-18 11:02:07,023 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:02:07,024 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:02:07,024 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:02:07,024 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:02:07,024 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:02:07,024 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:02:07,024 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:02:07,024 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:02:07,024 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:02:07,039 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-18 11:02:07,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 11:02:07,043 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:02:07,044 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:02:07,046 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:02:07,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:02:07,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1432253197, now seen corresponding path program 1 times [2018-11-18 11:02:07,051 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:02:07,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:02:07,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:02:07,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:02:07,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:02:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:02:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:02:07,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:02:07,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:02:07,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 11:02:07,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 11:02:07,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:02:07,137 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-11-18 11:02:07,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:02:07,149 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2018-11-18 11:02:07,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 11:02:07,150 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-11-18 11:02:07,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:02:07,158 INFO L225 Difference]: With dead ends: 39 [2018-11-18 11:02:07,158 INFO L226 Difference]: Without dead ends: 17 [2018-11-18 11:02:07,160 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:02:07,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-18 11:02:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-18 11:02:07,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 11:02:07,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-18 11:02:07,181 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2018-11-18 11:02:07,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:02:07,181 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-18 11:02:07,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 11:02:07,182 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-18 11:02:07,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 11:02:07,182 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:02:07,182 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:02:07,182 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:02:07,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:02:07,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1450187957, now seen corresponding path program 1 times [2018-11-18 11:02:07,183 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:02:07,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:02:07,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:02:07,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:02:07,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:02:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:02:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:02:07,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:02:07,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:02:07,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:02:07,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:02:07,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:02:07,208 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2018-11-18 11:02:07,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:02:07,233 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-11-18 11:02:07,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:02:07,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 11:02:07,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:02:07,235 INFO L225 Difference]: With dead ends: 19 [2018-11-18 11:02:07,235 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 11:02:07,235 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:02:07,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 11:02:07,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-11-18 11:02:07,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 11:02:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-11-18 11:02:07,238 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2018-11-18 11:02:07,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:02:07,238 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-11-18 11:02:07,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:02:07,239 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-11-18 11:02:07,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 11:02:07,239 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:02:07,239 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:02:07,239 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:02:07,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:02:07,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1450187902, now seen corresponding path program 1 times [2018-11-18 11:02:07,240 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:02:07,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:02:07,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:02:07,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:02:07,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:02:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:02:07,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:02:07,278 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:02:07,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:02:07,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:02:07,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:02:07,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:02:07,279 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 3 states. [2018-11-18 11:02:07,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:02:07,303 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2018-11-18 11:02:07,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:02:07,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 11:02:07,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:02:07,304 INFO L225 Difference]: With dead ends: 26 [2018-11-18 11:02:07,304 INFO L226 Difference]: Without dead ends: 25 [2018-11-18 11:02:07,305 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:02:07,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-18 11:02:07,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2018-11-18 11:02:07,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 11:02:07,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-18 11:02:07,309 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 10 [2018-11-18 11:02:07,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:02:07,309 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-18 11:02:07,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:02:07,309 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-18 11:02:07,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 11:02:07,310 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:02:07,310 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:02:07,311 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:02:07,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:02:07,311 INFO L82 PathProgramCache]: Analyzing trace with hash -2006153642, now seen corresponding path program 1 times [2018-11-18 11:02:07,311 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:02:07,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:02:07,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:02:07,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:02:07,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:02:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:02:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:02:07,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:02:07,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:02:07,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:02:07,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:02:07,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:02:07,335 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2018-11-18 11:02:07,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:02:07,355 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-11-18 11:02:07,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:02:07,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 11:02:07,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:02:07,356 INFO L225 Difference]: With dead ends: 19 [2018-11-18 11:02:07,356 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 11:02:07,357 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:02:07,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 11:02:07,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-18 11:02:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 11:02:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-11-18 11:02:07,360 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2018-11-18 11:02:07,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:02:07,360 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-18 11:02:07,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:02:07,361 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-11-18 11:02:07,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 11:02:07,361 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:02:07,361 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:02:07,361 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:02:07,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:02:07,362 INFO L82 PathProgramCache]: Analyzing trace with hash -2006151944, now seen corresponding path program 1 times [2018-11-18 11:02:07,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:02:07,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:02:07,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:02:07,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:02:07,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:02:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:02:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:02:07,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:02:07,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:02:07,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:02:07,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:02:07,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:02:07,380 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2018-11-18 11:02:07,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:02:07,389 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-11-18 11:02:07,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:02:07,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 11:02:07,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:02:07,390 INFO L225 Difference]: With dead ends: 20 [2018-11-18 11:02:07,390 INFO L226 Difference]: Without dead ends: 19 [2018-11-18 11:02:07,390 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:02:07,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-18 11:02:07,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-11-18 11:02:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 11:02:07,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-11-18 11:02:07,393 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2018-11-18 11:02:07,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:02:07,393 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-11-18 11:02:07,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:02:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-11-18 11:02:07,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 11:02:07,394 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:02:07,394 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:02:07,394 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:02:07,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:02:07,394 INFO L82 PathProgramCache]: Analyzing trace with hash -802592006, now seen corresponding path program 1 times [2018-11-18 11:02:07,394 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:02:07,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:02:07,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:02:07,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:02:07,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:02:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:02:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 11:02:07,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:02:07,416 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_39d103a5-0988-4ad3-a510-ac7e98c73c0a/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:02:07,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:02:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:02:07,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:02:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:02:07,521 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:02:07,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2018-11-18 11:02:07,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 11:02:07,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 11:02:07,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:02:07,522 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 6 states. [2018-11-18 11:02:07,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:02:07,614 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-11-18 11:02:07,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:02:07,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-11-18 11:02:07,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:02:07,615 INFO L225 Difference]: With dead ends: 38 [2018-11-18 11:02:07,615 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 11:02:07,616 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-11-18 11:02:07,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 11:02:07,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 11:02:07,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 11:02:07,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 11:02:07,616 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-11-18 11:02:07,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:02:07,617 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 11:02:07,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 11:02:07,617 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 11:02:07,617 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 11:02:07,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 11:02:07,646 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 11:02:07,646 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:02:07,646 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:02:07,647 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 11:02:07,647 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:02:07,647 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:02:07,647 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 13 25) no Hoare annotation was computed. [2018-11-18 11:02:07,647 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 21) no Hoare annotation was computed. [2018-11-18 11:02:07,647 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 23) no Hoare annotation was computed. [2018-11-18 11:02:07,647 INFO L421 ceAbstractionStarter]: At program point L19-3(lines 19 21) the Hoare annotation is: (and (<= 1 main_~y~0) (<= main_~x~0 1073741823) (<= 0 main_~x~0)) [2018-11-18 11:02:07,647 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-18 11:02:07,647 INFO L425 ceAbstractionStarter]: For program point L19-4(lines 19 21) no Hoare annotation was computed. [2018-11-18 11:02:07,648 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 11:02:07,648 INFO L428 ceAbstractionStarter]: At program point L17-3(lines 17 23) the Hoare annotation is: true [2018-11-18 11:02:07,648 INFO L425 ceAbstractionStarter]: For program point L17-4(lines 17 23) no Hoare annotation was computed. [2018-11-18 11:02:07,648 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 13 25) no Hoare annotation was computed. [2018-11-18 11:02:07,648 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 13 25) the Hoare annotation is: true [2018-11-18 11:02:07,648 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-18 11:02:07,648 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-18 11:02:07,648 INFO L425 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-18 11:02:07,648 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-18 11:02:07,648 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 11:02:07,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:02:07 BoogieIcfgContainer [2018-11-18 11:02:07,659 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:02:07,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:02:07,659 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:02:07,660 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:02:07,660 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:02:06" (3/4) ... [2018-11-18 11:02:07,663 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 11:02:07,667 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 11:02:07,667 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 11:02:07,670 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 11:02:07,670 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 11:02:07,670 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 11:02:07,697 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_39d103a5-0988-4ad3-a510-ac7e98c73c0a/bin-2019/uautomizer/witness.graphml [2018-11-18 11:02:07,698 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:02:07,698 INFO L168 Benchmark]: Toolchain (without parser) took 1066.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -97.2 MB). Peak memory consumption was 48.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:02:07,699 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:02:07,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.71 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:02:07,699 INFO L168 Benchmark]: Boogie Preprocessor took 16.79 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:02:07,700 INFO L168 Benchmark]: RCFGBuilder took 160.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -186.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-18 11:02:07,700 INFO L168 Benchmark]: TraceAbstraction took 680.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 72.7 MB). Peak memory consumption was 72.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:02:07,700 INFO L168 Benchmark]: Witness Printer took 38.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:02:07,702 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 167.71 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.79 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 160.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -186.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 680.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 72.7 MB). Peak memory consumption was 72.7 MB. Max. memory is 11.5 GB. * Witness Printer took 38.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (1 <= y && x <= 1073741823) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 4 error locations. SAFE Result, 0.6s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 83 SDtfs, 63 SDslu, 40 SDs, 0 SdLazy, 55 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 15 NumberOfFragments, 15 HoareAnnotationTreeSize, 6 FomulaSimplifications, 47 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 72 ConstructedInterpolants, 3 QuantifiedInterpolants, 1669 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...