./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_06b969bf-8639-4c29-9962-ea525e69c108/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_06b969bf-8639-4c29-9962-ea525e69c108/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_06b969bf-8639-4c29-9962-ea525e69c108/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_06b969bf-8639-4c29-9962-ea525e69c108/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_06b969bf-8639-4c29-9962-ea525e69c108/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_06b969bf-8639-4c29-9962-ea525e69c108/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 1b43ce72b37c8e17b4dbab62d6d09279867a7da3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 11:03:10,040 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:03:10,042 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:03:10,052 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:03:10,052 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:03:10,053 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:03:10,054 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:03:10,055 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:03:10,056 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:03:10,057 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:03:10,058 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:03:10,058 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:03:10,059 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:03:10,060 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:03:10,061 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:03:10,061 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:03:10,062 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:03:10,063 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:03:10,065 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:03:10,066 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:03:10,067 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:03:10,068 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:03:10,070 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:03:10,070 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:03:10,071 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:03:10,071 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:03:10,072 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:03:10,073 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:03:10,074 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:03:10,075 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:03:10,075 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:03:10,075 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:03:10,076 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:03:10,076 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:03:10,077 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:03:10,077 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:03:10,078 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_06b969bf-8639-4c29-9962-ea525e69c108/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-28 11:03:10,089 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:03:10,089 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:03:10,090 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:03:10,090 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:03:10,091 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:03:10,091 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:03:10,091 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:03:10,091 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:03:10,091 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 11:03:10,091 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:03:10,092 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:03:10,092 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 11:03:10,092 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:03:10,092 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 11:03:10,092 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 11:03:10,092 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:03:10,092 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:03:10,093 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 11:03:10,093 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:03:10,093 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:03:10,093 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:03:10,093 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:03:10,093 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:03:10,094 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:03:10,094 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:03:10,094 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 11:03:10,094 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:03:10,094 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:03:10,094 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 11:03:10,094 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_06b969bf-8639-4c29-9962-ea525e69c108/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 -> 1b43ce72b37c8e17b4dbab62d6d09279867a7da3 [2018-11-28 11:03:10,122 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:03:10,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:03:10,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:03:10,138 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:03:10,138 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:03:10,139 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_06b969bf-8639-4c29-9962-ea525e69c108/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops_true-termination_true-no-overflow.c [2018-11-28 11:03:10,190 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_06b969bf-8639-4c29-9962-ea525e69c108/bin-2019/uautomizer/data/2d0ed1175/7f9cb29c16a54d7c9650ec88547bfb61/FLAG07cbdad8e [2018-11-28 11:03:10,533 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:03:10,533 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_06b969bf-8639-4c29-9962-ea525e69c108/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops_true-termination_true-no-overflow.c [2018-11-28 11:03:10,538 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_06b969bf-8639-4c29-9962-ea525e69c108/bin-2019/uautomizer/data/2d0ed1175/7f9cb29c16a54d7c9650ec88547bfb61/FLAG07cbdad8e [2018-11-28 11:03:10,551 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_06b969bf-8639-4c29-9962-ea525e69c108/bin-2019/uautomizer/data/2d0ed1175/7f9cb29c16a54d7c9650ec88547bfb61 [2018-11-28 11:03:10,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:03:10,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:03:10,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:03:10,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:03:10,558 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:03:10,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:03:10" (1/1) ... [2018-11-28 11:03:10,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e991360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:03:10, skipping insertion in model container [2018-11-28 11:03:10,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:03:10" (1/1) ... [2018-11-28 11:03:10,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:03:10,578 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:03:10,699 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:03:10,702 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:03:10,715 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:03:10,725 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:03:10,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:03:10 WrapperNode [2018-11-28 11:03:10,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:03:10,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:03:10,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:03:10,726 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:03:10,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:03:10" (1/1) ... [2018-11-28 11:03:10,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:03:10" (1/1) ... [2018-11-28 11:03:10,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:03:10,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:03:10,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:03:10,744 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:03:10,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:03:10" (1/1) ... [2018-11-28 11:03:10,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:03:10" (1/1) ... [2018-11-28 11:03:10,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:03:10" (1/1) ... [2018-11-28 11:03:10,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:03:10" (1/1) ... [2018-11-28 11:03:10,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:03:10" (1/1) ... [2018-11-28 11:03:10,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:03:10" (1/1) ... [2018-11-28 11:03:10,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:03:10" (1/1) ... [2018-11-28 11:03:10,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:03:10,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:03:10,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:03:10,763 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:03:10,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:03:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06b969bf-8639-4c29-9962-ea525e69c108/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 [2018-11-28 11:03:10,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 11:03:10,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 11:03:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:03:10,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:03:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 11:03:10,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 11:03:11,001 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:03:11,001 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 11:03:11,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:03:11 BoogieIcfgContainer [2018-11-28 11:03:11,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:03:11,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:03:11,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:03:11,004 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:03:11,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:03:10" (1/3) ... [2018-11-28 11:03:11,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c66ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:03:11, skipping insertion in model container [2018-11-28 11:03:11,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:03:10" (2/3) ... [2018-11-28 11:03:11,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c66ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:03:11, skipping insertion in model container [2018-11-28 11:03:11,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:03:11" (3/3) ... [2018-11-28 11:03:11,007 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-loops_true-termination_true-no-overflow.c [2018-11-28 11:03:11,014 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:03:11,021 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-28 11:03:11,038 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-28 11:03:11,068 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:03:11,069 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:03:11,069 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 11:03:11,069 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:03:11,069 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:03:11,069 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:03:11,070 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:03:11,070 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:03:11,070 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:03:11,087 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-28 11:03:11,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 11:03:11,092 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:03:11,093 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:03:11,095 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 11:03:11,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:03:11,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1755562560, now seen corresponding path program 1 times [2018-11-28 11:03:11,102 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:03:11,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:03:11,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:03:11,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:03:11,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:03:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:03:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:03:11,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:03:11,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:03:11,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:03:11,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:03:11,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:03:11,252 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2018-11-28 11:03:11,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:03:11,304 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2018-11-28 11:03:11,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:03:11,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 11:03:11,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:03:11,312 INFO L225 Difference]: With dead ends: 40 [2018-11-28 11:03:11,312 INFO L226 Difference]: Without dead ends: 16 [2018-11-28 11:03:11,315 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:03:11,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-28 11:03:11,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-28 11:03:11,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 11:03:11,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-11-28 11:03:11,342 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2018-11-28 11:03:11,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:03:11,343 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-11-28 11:03:11,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:03:11,343 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-11-28 11:03:11,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 11:03:11,344 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:03:11,344 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:03:11,344 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 11:03:11,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:03:11,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1412117878, now seen corresponding path program 1 times [2018-11-28 11:03:11,345 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:03:11,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:03:11,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:03:11,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:03:11,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:03:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:03:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:03:11,373 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:03:11,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:03:11,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:03:11,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:03:11,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:03:11,375 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 3 states. [2018-11-28 11:03:11,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:03:11,409 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2018-11-28 11:03:11,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:03:11,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 11:03:11,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:03:11,410 INFO L225 Difference]: With dead ends: 24 [2018-11-28 11:03:11,410 INFO L226 Difference]: Without dead ends: 23 [2018-11-28 11:03:11,411 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:03:11,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-28 11:03:11,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2018-11-28 11:03:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-28 11:03:11,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2018-11-28 11:03:11,415 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 10 [2018-11-28 11:03:11,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:03:11,415 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-11-28 11:03:11,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:03:11,415 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2018-11-28 11:03:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 11:03:11,416 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:03:11,416 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:03:11,416 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 11:03:11,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:03:11,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1412135560, now seen corresponding path program 1 times [2018-11-28 11:03:11,416 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:03:11,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:03:11,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:03:11,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:03:11,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:03:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:03:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:03:11,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:03:11,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:03:11,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:03:11,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:03:11,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:03:11,435 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 3 states. [2018-11-28 11:03:11,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:03:11,454 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2018-11-28 11:03:11,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:03:11,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 11:03:11,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:03:11,455 INFO L225 Difference]: With dead ends: 19 [2018-11-28 11:03:11,456 INFO L226 Difference]: Without dead ends: 18 [2018-11-28 11:03:11,456 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:03:11,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-28 11:03:11,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-11-28 11:03:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 11:03:11,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2018-11-28 11:03:11,459 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2018-11-28 11:03:11,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:03:11,459 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-28 11:03:11,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:03:11,459 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2018-11-28 11:03:11,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 11:03:11,460 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:03:11,460 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:03:11,460 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 11:03:11,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:03:11,461 INFO L82 PathProgramCache]: Analyzing trace with hash 825981320, now seen corresponding path program 1 times [2018-11-28 11:03:11,461 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:03:11,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:03:11,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:03:11,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:03:11,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:03:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:03:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:03:11,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:03:11,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:03:11,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:03:11,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:03:11,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:03:11,485 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 3 states. [2018-11-28 11:03:11,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:03:11,504 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2018-11-28 11:03:11,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:03:11,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-28 11:03:11,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:03:11,505 INFO L225 Difference]: With dead ends: 18 [2018-11-28 11:03:11,506 INFO L226 Difference]: Without dead ends: 17 [2018-11-28 11:03:11,506 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:03:11,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-28 11:03:11,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2018-11-28 11:03:11,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 11:03:11,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2018-11-28 11:03:11,510 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2018-11-28 11:03:11,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:03:11,510 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2018-11-28 11:03:11,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:03:11,511 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2018-11-28 11:03:11,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 11:03:11,511 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:03:11,511 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:03:11,511 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 11:03:11,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:03:11,512 INFO L82 PathProgramCache]: Analyzing trace with hash -800899382, now seen corresponding path program 1 times [2018-11-28 11:03:11,512 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:03:11,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:03:11,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:03:11,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:03:11,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:03:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:03:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 11:03:11,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:03:11,539 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06b969bf-8639-4c29-9962-ea525e69c108/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 [2018-11-28 11:03:11,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:03:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:03:11,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:03:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:03:11,645 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:03:11,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2018-11-28 11:03:11,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 11:03:11,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 11:03:11,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-28 11:03:11,646 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 6 states. [2018-11-28 11:03:11,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:03:11,731 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2018-11-28 11:03:11,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 11:03:11,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-28 11:03:11,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:03:11,732 INFO L225 Difference]: With dead ends: 30 [2018-11-28 11:03:11,732 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 11:03:11,733 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-11-28 11:03:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 11:03:11,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 11:03:11,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 11:03:11,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 11:03:11,734 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-11-28 11:03:11,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:03:11,734 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:03:11,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 11:03:11,734 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 11:03:11,734 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 11:03:11,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 11:03:11,780 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 11:03:11,780 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 11:03:11,780 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 11:03:11,780 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 11:03:11,780 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 11:03:11,780 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 11:03:11,780 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-28 11:03:11,780 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 13 30) no Hoare annotation was computed. [2018-11-28 11:03:11,780 INFO L448 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-28 11:03:11,781 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-28 11:03:11,781 INFO L448 ceAbstractionStarter]: For program point L21(lines 21 25) no Hoare annotation was computed. [2018-11-28 11:03:11,781 INFO L448 ceAbstractionStarter]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2018-11-28 11:03:11,781 INFO L444 ceAbstractionStarter]: At program point L19-2(lines 19 27) the Hoare annotation is: (<= main_~x~0 1073741823) [2018-11-28 11:03:11,781 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 13 30) no Hoare annotation was computed. [2018-11-28 11:03:11,781 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-28 11:03:11,781 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 13 30) the Hoare annotation is: true [2018-11-28 11:03:11,781 INFO L448 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2018-11-28 11:03:11,781 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-28 11:03:11,782 INFO L444 ceAbstractionStarter]: At program point L22-2(lines 22 24) the Hoare annotation is: (and (<= 1 main_~y~0) (<= main_~x~0 1073741823) (<= 0 main_~x~0)) [2018-11-28 11:03:11,782 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 28) no Hoare annotation was computed. [2018-11-28 11:03:11,782 INFO L448 ceAbstractionStarter]: For program point L18-1(lines 18 28) no Hoare annotation was computed. [2018-11-28 11:03:11,782 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-28 11:03:11,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:03:11 BoogieIcfgContainer [2018-11-28 11:03:11,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 11:03:11,791 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:03:11,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:03:11,792 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:03:11,792 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:03:11" (3/4) ... [2018-11-28 11:03:11,795 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 11:03:11,799 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 11:03:11,800 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 11:03:11,803 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-28 11:03:11,803 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 11:03:11,803 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 11:03:11,836 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_06b969bf-8639-4c29-9962-ea525e69c108/bin-2019/uautomizer/witness.graphml [2018-11-28 11:03:11,836 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:03:11,837 INFO L168 Benchmark]: Toolchain (without parser) took 1283.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 952.2 MB in the beginning and 1.1 GB in the end (delta: -124.5 MB). Peak memory consumption was 45.9 MB. Max. memory is 11.5 GB. [2018-11-28 11:03:11,838 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-11-28 11:03:11,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.87 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-28 11:03:11,839 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.36 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:03:11,839 INFO L168 Benchmark]: Boogie Preprocessor took 18.57 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:03:11,839 INFO L168 Benchmark]: RCFGBuilder took 239.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 941.4 MB in the beginning and 1.2 GB in the end (delta: -213.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-11-28 11:03:11,840 INFO L168 Benchmark]: TraceAbstraction took 789.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 74.8 MB). Peak memory consumption was 74.8 MB. Max. memory is 11.5 GB. [2018-11-28 11:03:11,840 INFO L168 Benchmark]: Witness Printer took 44.66 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-28 11:03:11,842 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 170.87 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.36 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.57 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 239.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 941.4 MB in the beginning and 1.2 GB in the end (delta: -213.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 789.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 74.8 MB). Peak memory consumption was 74.8 MB. Max. memory is 11.5 GB. * Witness Printer took 44.66 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: 3.3 MB). Peak memory consumption was 3.3 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: 26]: 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 - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: x <= 1073741823 - InvariantResult [Line: 22]: 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, 0.7s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 56 SDslu, 40 SDs, 0 SdLazy, 70 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s 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, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 14 NumberOfFragments, 17 HoareAnnotationTreeSize, 6 FomulaSimplifications, 301 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 2 QuantifiedInterpolants, 1348 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 1/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...