./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/MenloPark_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/MenloPark_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7c87c9e4b733dad657e6ff9e27a5e9b26a2c3764 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 05:56:56,821 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 05:56:56,822 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 05:56:56,828 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 05:56:56,829 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 05:56:56,829 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 05:56:56,830 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 05:56:56,831 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 05:56:56,832 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 05:56:56,833 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 05:56:56,833 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 05:56:56,834 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 05:56:56,834 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 05:56:56,835 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 05:56:56,835 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 05:56:56,836 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 05:56:56,836 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 05:56:56,837 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 05:56:56,838 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 05:56:56,839 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 05:56:56,840 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 05:56:56,841 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 05:56:56,842 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 05:56:56,843 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 05:56:56,843 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 05:56:56,843 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 05:56:56,844 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 05:56:56,844 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 05:56:56,844 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 05:56:56,845 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 05:56:56,845 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 05:56:56,845 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 05:56:56,845 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 05:56:56,846 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 05:56:56,846 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 05:56:56,846 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 05:56:56,847 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-23 05:56:56,853 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 05:56:56,854 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 05:56:56,854 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 05:56:56,854 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 05:56:56,854 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 05:56:56,854 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 05:56:56,855 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 05:56:56,855 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 05:56:56,855 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 05:56:56,855 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 05:56:56,855 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 05:56:56,855 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 05:56:56,855 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 05:56:56,856 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 05:56:56,856 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 05:56:56,856 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 05:56:56,856 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 05:56:56,856 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 05:56:56,856 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 05:56:56,857 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 05:56:56,857 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 05:56:56,857 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 05:56:56,857 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 05:56:56,857 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 05:56:56,857 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 05:56:56,858 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 05:56:56,858 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 05:56:56,858 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 05:56:56,858 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 05:56:56,858 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 05:56:56,858 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 05:56:56,858 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 05:56:56,858 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 05:56:56,859 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 05:56:56,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 05:56:56,859 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 05:56:56,859 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c87c9e4b733dad657e6ff9e27a5e9b26a2c3764 [2018-11-23 05:56:56,881 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 05:56:56,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 05:56:56,890 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 05:56:56,891 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 05:56:56,891 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 05:56:56,892 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted/MenloPark_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 05:56:56,925 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/data/37d4ad9e8/47c283648b144c74848c9e06498910d2/FLAG0336191bb [2018-11-23 05:56:57,327 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 05:56:57,327 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/sv-benchmarks/c/termination-crafted/MenloPark_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 05:56:57,331 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/data/37d4ad9e8/47c283648b144c74848c9e06498910d2/FLAG0336191bb [2018-11-23 05:56:57,341 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/data/37d4ad9e8/47c283648b144c74848c9e06498910d2 [2018-11-23 05:56:57,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 05:56:57,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 05:56:57,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 05:56:57,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 05:56:57,349 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 05:56:57,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:56:57" (1/1) ... [2018-11-23 05:56:57,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@108971e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:56:57, skipping insertion in model container [2018-11-23 05:56:57,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:56:57" (1/1) ... [2018-11-23 05:56:57,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 05:56:57,374 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 05:56:57,471 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:56:57,473 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 05:56:57,481 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:56:57,489 INFO L195 MainTranslator]: Completed translation [2018-11-23 05:56:57,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:56:57 WrapperNode [2018-11-23 05:56:57,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 05:56:57,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 05:56:57,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 05:56:57,490 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 05:56:57,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:56:57" (1/1) ... [2018-11-23 05:56:57,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:56:57" (1/1) ... [2018-11-23 05:56:57,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 05:56:57,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 05:56:57,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 05:56:57,502 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 05:56:57,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:56:57" (1/1) ... [2018-11-23 05:56:57,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:56:57" (1/1) ... [2018-11-23 05:56:57,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:56:57" (1/1) ... [2018-11-23 05:56:57,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:56:57" (1/1) ... [2018-11-23 05:56:57,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:56:57" (1/1) ... [2018-11-23 05:56:57,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:56:57" (1/1) ... [2018-11-23 05:56:57,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:56:57" (1/1) ... [2018-11-23 05:56:57,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 05:56:57,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 05:56:57,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 05:56:57,513 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 05:56:57,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:56:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 05:56:57,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 05:56:57,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 05:56:57,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 05:56:57,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 05:56:57,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 05:56:57,583 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 05:56:57,681 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 05:56:57,681 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 05:56:57,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:56:57 BoogieIcfgContainer [2018-11-23 05:56:57,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 05:56:57,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 05:56:57,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 05:56:57,684 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 05:56:57,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:56:57" (1/3) ... [2018-11-23 05:56:57,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e96b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:56:57, skipping insertion in model container [2018-11-23 05:56:57,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:56:57" (2/3) ... [2018-11-23 05:56:57,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e96b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:56:57, skipping insertion in model container [2018-11-23 05:56:57,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:56:57" (3/3) ... [2018-11-23 05:56:57,686 INFO L112 eAbstractionObserver]: Analyzing ICFG MenloPark_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 05:56:57,692 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 05:56:57,697 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-23 05:56:57,710 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-23 05:56:57,736 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 05:56:57,736 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 05:56:57,736 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 05:56:57,737 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 05:56:57,737 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 05:56:57,737 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 05:56:57,737 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 05:56:57,737 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 05:56:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-23 05:56:57,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-23 05:56:57,751 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:56:57,752 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:56:57,753 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:56:57,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:56:57,757 INFO L82 PathProgramCache]: Analyzing trace with hash -778806590, now seen corresponding path program 1 times [2018-11-23 05:56:57,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:56:57,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:57,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:56:57,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:57,793 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:56:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:56:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:56:57,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:56:57,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 05:56:57,850 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:56:57,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 05:56:57,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 05:56:57,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:56:57,862 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2018-11-23 05:56:57,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:56:57,905 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-11-23 05:56:57,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:56:57,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-23 05:56:57,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:56:57,912 INFO L225 Difference]: With dead ends: 35 [2018-11-23 05:56:57,912 INFO L226 Difference]: Without dead ends: 21 [2018-11-23 05:56:57,914 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:56:57,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-23 05:56:57,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2018-11-23 05:56:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-23 05:56:57,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-23 05:56:57,936 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2018-11-23 05:56:57,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:56:57,937 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-23 05:56:57,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 05:56:57,937 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-23 05:56:57,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-23 05:56:57,937 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:56:57,938 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:56:57,938 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:56:57,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:56:57,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1626799533, now seen corresponding path program 1 times [2018-11-23 05:56:57,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:56:57,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:57,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:56:57,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:57,940 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:56:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:56:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:56:57,969 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:56:57,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 05:56:57,969 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:56:57,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 05:56:57,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 05:56:57,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:56:57,970 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2018-11-23 05:56:58,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:56:58,008 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-11-23 05:56:58,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:56:58,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-23 05:56:58,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:56:58,009 INFO L225 Difference]: With dead ends: 26 [2018-11-23 05:56:58,009 INFO L226 Difference]: Without dead ends: 25 [2018-11-23 05:56:58,010 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:56:58,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-23 05:56:58,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2018-11-23 05:56:58,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 05:56:58,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-23 05:56:58,013 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 8 [2018-11-23 05:56:58,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:56:58,014 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-23 05:56:58,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 05:56:58,014 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-23 05:56:58,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-23 05:56:58,014 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:56:58,014 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:56:58,014 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:56:58,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:56:58,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1108821980, now seen corresponding path program 1 times [2018-11-23 05:56:58,015 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:56:58,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:58,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:56:58,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:58,016 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:56:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:56:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:56:58,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:56:58,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 05:56:58,048 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:56:58,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 05:56:58,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 05:56:58,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:56:58,049 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states. [2018-11-23 05:56:58,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:56:58,075 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-11-23 05:56:58,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:56:58,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-23 05:56:58,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:56:58,076 INFO L225 Difference]: With dead ends: 24 [2018-11-23 05:56:58,076 INFO L226 Difference]: Without dead ends: 23 [2018-11-23 05:56:58,076 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:56:58,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-23 05:56:58,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-11-23 05:56:58,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-23 05:56:58,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-23 05:56:58,080 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 9 [2018-11-23 05:56:58,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:56:58,080 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-23 05:56:58,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 05:56:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-23 05:56:58,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 05:56:58,080 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:56:58,080 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:56:58,081 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:56:58,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:56:58,081 INFO L82 PathProgramCache]: Analyzing trace with hash -13742961, now seen corresponding path program 1 times [2018-11-23 05:56:58,081 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:56:58,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:58,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:56:58,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:58,085 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:56:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:56:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:56:58,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:56:58,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 05:56:58,099 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:56:58,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 05:56:58,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 05:56:58,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:56:58,100 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 3 states. [2018-11-23 05:56:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:56:58,132 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-11-23 05:56:58,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:56:58,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-23 05:56:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:56:58,133 INFO L225 Difference]: With dead ends: 24 [2018-11-23 05:56:58,133 INFO L226 Difference]: Without dead ends: 23 [2018-11-23 05:56:58,133 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:56:58,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-23 05:56:58,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-23 05:56:58,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-23 05:56:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-23 05:56:58,136 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 10 [2018-11-23 05:56:58,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:56:58,136 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-23 05:56:58,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 05:56:58,136 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-23 05:56:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 05:56:58,137 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:56:58,137 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:56:58,137 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:56:58,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:56:58,137 INFO L82 PathProgramCache]: Analyzing trace with hash -426031738, now seen corresponding path program 1 times [2018-11-23 05:56:58,139 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:56:58,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:58,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:56:58,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:58,141 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:56:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:56:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:56:58,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:56:58,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 05:56:58,160 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:56:58,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 05:56:58,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 05:56:58,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:56:58,161 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 3 states. [2018-11-23 05:56:58,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:56:58,181 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-11-23 05:56:58,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:56:58,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-23 05:56:58,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:56:58,182 INFO L225 Difference]: With dead ends: 26 [2018-11-23 05:56:58,182 INFO L226 Difference]: Without dead ends: 25 [2018-11-23 05:56:58,182 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:56:58,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-23 05:56:58,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-11-23 05:56:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-23 05:56:58,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-11-23 05:56:58,186 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 11 [2018-11-23 05:56:58,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:56:58,187 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-11-23 05:56:58,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 05:56:58,187 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-23 05:56:58,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 05:56:58,187 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:56:58,187 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:56:58,188 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:56:58,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:56:58,188 INFO L82 PathProgramCache]: Analyzing trace with hash -322081935, now seen corresponding path program 1 times [2018-11-23 05:56:58,188 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:56:58,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:58,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:56:58,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:58,191 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:56:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:56:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:56:58,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:56:58,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 05:56:58,208 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:56:58,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 05:56:58,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 05:56:58,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:56:58,208 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 3 states. [2018-11-23 05:56:58,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:56:58,226 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-11-23 05:56:58,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:56:58,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-23 05:56:58,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:56:58,226 INFO L225 Difference]: With dead ends: 26 [2018-11-23 05:56:58,226 INFO L226 Difference]: Without dead ends: 25 [2018-11-23 05:56:58,227 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:56:58,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-23 05:56:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-11-23 05:56:58,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-23 05:56:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-11-23 05:56:58,229 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 12 [2018-11-23 05:56:58,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:56:58,229 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-11-23 05:56:58,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 05:56:58,229 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-11-23 05:56:58,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 05:56:58,229 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:56:58,229 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:56:58,230 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:56:58,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:56:58,230 INFO L82 PathProgramCache]: Analyzing trace with hash -283092845, now seen corresponding path program 1 times [2018-11-23 05:56:58,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:56:58,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:58,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:56:58,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:58,231 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:56:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:56:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:56:58,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:56:58,283 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 05:56:58,283 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-11-23 05:56:58,284 INFO L202 CegarAbsIntRunner]: [0], [4], [13], [14], [15], [17], [19], [21], [23], [25], [31], [32], [33] [2018-11-23 05:56:58,303 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 05:56:58,303 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 05:56:58,398 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 05:56:58,399 INFO L272 AbstractInterpreter]: Visited 13 different actions 21 times. Merged at 8 different actions 8 times. Never widened. Performed 76 root evaluator evaluations with a maximum evaluation depth of 4. Performed 76 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-11-23 05:56:58,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:56:58,405 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 05:56:58,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:56:58,405 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 05:56:58,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:56:58,412 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 05:56:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:56:58,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:56:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:56:58,502 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 05:56:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:56:58,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 05:56:58,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2018-11-23 05:56:58,568 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 05:56:58,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 05:56:58,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 05:56:58,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-23 05:56:58,569 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 9 states. [2018-11-23 05:56:58,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:56:58,634 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-23 05:56:58,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 05:56:58,635 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2018-11-23 05:56:58,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:56:58,635 INFO L225 Difference]: With dead ends: 34 [2018-11-23 05:56:58,635 INFO L226 Difference]: Without dead ends: 33 [2018-11-23 05:56:58,636 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2018-11-23 05:56:58,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-23 05:56:58,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2018-11-23 05:56:58,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-23 05:56:58,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-23 05:56:58,640 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2018-11-23 05:56:58,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:56:58,641 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-23 05:56:58,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 05:56:58,641 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-23 05:56:58,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-23 05:56:58,642 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:56:58,642 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:56:58,642 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:56:58,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:56:58,642 INFO L82 PathProgramCache]: Analyzing trace with hash -185943556, now seen corresponding path program 1 times [2018-11-23 05:56:58,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:56:58,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:58,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:56:58,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:58,646 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:56:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:56:58,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:56:58,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:56:58,680 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 05:56:58,680 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-23 05:56:58,680 INFO L202 CegarAbsIntRunner]: [0], [4], [13], [15], [16], [17], [19], [21], [23], [25], [31], [32], [33] [2018-11-23 05:56:58,681 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 05:56:58,681 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 05:56:58,708 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 05:56:58,708 INFO L272 AbstractInterpreter]: Visited 13 different actions 21 times. Merged at 8 different actions 8 times. Never widened. Performed 76 root evaluator evaluations with a maximum evaluation depth of 4. Performed 76 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-11-23 05:56:58,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:56:58,714 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 05:56:58,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:56:58,714 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 05:56:58,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:56:58,723 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 05:56:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:56:58,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:56:58,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:56:58,754 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 05:56:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:56:58,807 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 05:56:58,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2018-11-23 05:56:58,807 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 05:56:58,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 05:56:58,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 05:56:58,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-23 05:56:58,808 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2018-11-23 05:56:58,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:56:58,866 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-11-23 05:56:58,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 05:56:58,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-11-23 05:56:58,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:56:58,867 INFO L225 Difference]: With dead ends: 33 [2018-11-23 05:56:58,867 INFO L226 Difference]: Without dead ends: 32 [2018-11-23 05:56:58,867 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-11-23 05:56:58,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-23 05:56:58,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2018-11-23 05:56:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-23 05:56:58,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-11-23 05:56:58,870 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 15 [2018-11-23 05:56:58,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:56:58,870 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-11-23 05:56:58,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 05:56:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-11-23 05:56:58,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 05:56:58,871 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:56:58,871 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:56:58,871 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:56:58,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:56:58,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1469282891, now seen corresponding path program 1 times [2018-11-23 05:56:58,872 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:56:58,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:58,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:56:58,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:58,873 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:56:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:56:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:56:58,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:56:58,903 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 05:56:58,903 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-11-23 05:56:58,903 INFO L202 CegarAbsIntRunner]: [0], [4], [13], [15], [17], [18], [19], [21], [23], [25], [31], [32], [33] [2018-11-23 05:56:58,904 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 05:56:58,904 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 05:56:58,923 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 05:56:58,923 INFO L272 AbstractInterpreter]: Visited 13 different actions 21 times. Merged at 7 different actions 7 times. Never widened. Performed 73 root evaluator evaluations with a maximum evaluation depth of 4. Performed 73 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-11-23 05:56:58,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:56:58,924 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 05:56:58,961 INFO L219 lantSequenceWeakener]: Could never weaken! [2018-11-23 05:56:58,962 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 05:56:58,971 INFO L415 sIntCurrentIteration]: We unified 15 AI predicates to 15 [2018-11-23 05:56:58,971 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 05:56:58,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 05:56:58,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-23 05:56:58,972 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:56:58,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 05:56:58,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 05:56:58,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:56:58,973 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 4 states. [2018-11-23 05:56:59,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:56:59,041 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-23 05:56:59,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 05:56:59,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-23 05:56:59,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:56:59,042 INFO L225 Difference]: With dead ends: 28 [2018-11-23 05:56:59,042 INFO L226 Difference]: Without dead ends: 24 [2018-11-23 05:56:59,042 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:56:59,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-23 05:56:59,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-23 05:56:59,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-23 05:56:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-11-23 05:56:59,045 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 16 [2018-11-23 05:56:59,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:56:59,045 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-11-23 05:56:59,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 05:56:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-23 05:56:59,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 05:56:59,045 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:56:59,045 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-23 05:56:59,046 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:56:59,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:56:59,046 INFO L82 PathProgramCache]: Analyzing trace with hash -412918366, now seen corresponding path program 2 times [2018-11-23 05:56:59,046 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:56:59,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:59,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:56:59,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:56:59,047 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:56:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:56:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:56:59,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:56:59,123 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 05:56:59,123 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 05:56:59,123 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 05:56:59,123 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:56:59,123 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 05:56:59,129 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 05:56:59,129 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 05:56:59,144 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 05:56:59,144 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:56:59,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:56:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:56:59,240 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 05:57:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:57:00,171 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 05:57:00,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 18 [2018-11-23 05:57:00,171 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 05:57:00,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 05:57:00,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 05:57:00,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2018-11-23 05:57:00,172 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 14 states. [2018-11-23 05:57:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:57:00,343 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2018-11-23 05:57:00,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 05:57:00,344 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2018-11-23 05:57:00,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:57:00,344 INFO L225 Difference]: With dead ends: 48 [2018-11-23 05:57:00,344 INFO L226 Difference]: Without dead ends: 47 [2018-11-23 05:57:00,345 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2018-11-23 05:57:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-23 05:57:00,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-11-23 05:57:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-23 05:57:00,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2018-11-23 05:57:00,348 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 21 [2018-11-23 05:57:00,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:57:00,348 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2018-11-23 05:57:00,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 05:57:00,349 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2018-11-23 05:57:00,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 05:57:00,349 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:57:00,349 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-23 05:57:00,349 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:57:00,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:57:00,350 INFO L82 PathProgramCache]: Analyzing trace with hash 84432589, now seen corresponding path program 2 times [2018-11-23 05:57:00,350 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:57:00,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:57:00,351 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:57:00,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:57:00,351 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:57:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:57:00,375 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 05:57:00,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:57:00,376 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 05:57:00,376 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 05:57:00,376 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 05:57:00,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:57:00,376 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 05:57:00,383 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 05:57:00,383 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 05:57:00,388 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-23 05:57:00,388 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:57:00,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:57:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 05:57:00,408 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 05:57:00,432 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 05:57:00,446 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-23 05:57:00,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 11 [2018-11-23 05:57:00,446 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 05:57:00,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 05:57:00,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 05:57:00,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-11-23 05:57:00,447 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 5 states. [2018-11-23 05:57:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:57:00,470 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-11-23 05:57:00,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 05:57:00,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-23 05:57:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:57:00,471 INFO L225 Difference]: With dead ends: 44 [2018-11-23 05:57:00,471 INFO L226 Difference]: Without dead ends: 43 [2018-11-23 05:57:00,471 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-11-23 05:57:00,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-23 05:57:00,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-23 05:57:00,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-23 05:57:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-11-23 05:57:00,476 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 22 [2018-11-23 05:57:00,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:57:00,476 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-11-23 05:57:00,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 05:57:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-11-23 05:57:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-23 05:57:00,477 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:57:00,477 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-23 05:57:00,477 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 05:57:00,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:57:00,478 INFO L82 PathProgramCache]: Analyzing trace with hash -606346541, now seen corresponding path program 3 times [2018-11-23 05:57:00,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 05:57:00,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:57:00,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:57:00,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:57:00,479 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 05:57:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:57:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-23 05:57:00,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:57:00,553 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 05:57:00,553 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 05:57:00,553 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 05:57:00,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:57:00,554 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 05:57:00,560 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 05:57:00,560 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 05:57:00,580 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 05:57:00,580 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:57:00,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:57:00,806 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:57:00,806 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 05:57:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:57:03,721 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 05:57:03,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 15] total 37 [2018-11-23 05:57:03,722 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 05:57:03,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-23 05:57:03,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-23 05:57:03,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1100, Unknown=3, NotChecked=0, Total=1406 [2018-11-23 05:57:03,723 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 24 states. [2018-11-23 05:57:04,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:57:04,148 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2018-11-23 05:57:04,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-23 05:57:04,149 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 42 [2018-11-23 05:57:04,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:57:04,149 INFO L225 Difference]: With dead ends: 51 [2018-11-23 05:57:04,149 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 05:57:04,150 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=658, Invalid=2095, Unknown=3, NotChecked=0, Total=2756 [2018-11-23 05:57:04,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 05:57:04,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 05:57:04,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 05:57:04,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 05:57:04,151 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2018-11-23 05:57:04,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:57:04,151 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 05:57:04,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-23 05:57:04,152 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 05:57:04,152 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 05:57:04,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 05:57:04,238 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 05:57:04,238 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 05:57:04,238 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 05:57:04,238 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 05:57:04,238 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 05:57:04,238 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 05:57:04,238 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-23 05:57:04,238 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-23 05:57:04,238 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 16 28) no Hoare annotation was computed. [2018-11-23 05:57:04,238 INFO L448 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-11-23 05:57:04,238 INFO L448 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-23 05:57:04,239 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-23 05:57:04,239 INFO L448 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-11-23 05:57:04,239 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 16 28) no Hoare annotation was computed. [2018-11-23 05:57:04,239 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-23 05:57:04,239 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-23 05:57:04,239 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 16 28) the Hoare annotation is: true [2018-11-23 05:57:04,239 INFO L448 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-23 05:57:04,239 INFO L448 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2018-11-23 05:57:04,239 INFO L444 ceAbstractionStarter]: At program point L22-2(lines 22 26) the Hoare annotation is: (let ((.cse0 (or (and (= main_~y~0 99) (= (+ main_~z~0 1) 0)) (and (= main_~y~0 100) (= main_~z~0 1))))) (or (and (<= main_~x~0 2147483647) .cse0 (<= 100 main_~y~0)) (and .cse0 (<= main_~x~0 2147483547)))) [2018-11-23 05:57:04,239 INFO L448 ceAbstractionStarter]: For program point L22-3(lines 22 26) no Hoare annotation was computed. [2018-11-23 05:57:04,239 INFO L448 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-11-23 05:57:04,239 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-23 05:57:04,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 05:57:04 BoogieIcfgContainer [2018-11-23 05:57:04,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 05:57:04,247 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 05:57:04,248 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 05:57:04,248 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 05:57:04,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:56:57" (3/4) ... [2018-11-23 05:57:04,251 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 05:57:04,255 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 05:57:04,255 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 05:57:04,258 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-23 05:57:04,258 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 05:57:04,258 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 05:57:04,292 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_42497ee9-7254-4f05-abad-c280cafebdc0/bin-2019/utaipan/witness.graphml [2018-11-23 05:57:04,292 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 05:57:04,293 INFO L168 Benchmark]: Toolchain (without parser) took 6949.27 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 227.5 MB). Free memory was 959.2 MB in the beginning and 978.8 MB in the end (delta: -19.6 MB). Peak memory consumption was 208.0 MB. Max. memory is 11.5 GB. [2018-11-23 05:57:04,294 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 05:57:04,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 144.50 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:57:04,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.69 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 05:57:04,295 INFO L168 Benchmark]: Boogie Preprocessor took 10.98 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:57:04,296 INFO L168 Benchmark]: RCFGBuilder took 168.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -203.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-23 05:57:04,296 INFO L168 Benchmark]: TraceAbstraction took 6565.11 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 62.4 MB). Free memory was 1.1 GB in the beginning and 983.8 MB in the end (delta: 165.1 MB). Peak memory consumption was 227.4 MB. Max. memory is 11.5 GB. [2018-11-23 05:57:04,296 INFO L168 Benchmark]: Witness Printer took 45.04 ms. Allocated memory is still 1.3 GB. Free memory was 983.8 MB in the beginning and 978.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 11.5 GB. [2018-11-23 05:57:04,298 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 144.50 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.69 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.98 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 168.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -203.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6565.11 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 62.4 MB). Free memory was 1.1 GB in the beginning and 983.8 MB in the end (delta: 165.1 MB). Peak memory consumption was 227.4 MB. Max. memory is 11.5 GB. * Witness Printer took 45.04 ms. Allocated memory is still 1.3 GB. Free memory was 983.8 MB in the beginning and 978.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 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: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: 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: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((x <= 2147483647 && ((y == 99 && z + 1 == 0) || (y == 100 && z == 1))) && 100 <= y) || (((y == 99 && z + 1 == 0) || (y == 100 && z == 1)) && x <= 2147483547) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 6 error locations. SAFE Result, 6.5s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 128 SDtfs, 135 SDslu, 193 SDs, 0 SdLazy, 826 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 318 GetRequests, 196 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 3 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.2 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 20 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 11 NumberOfFragments, 50 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 297 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 301 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 393 ConstructedInterpolants, 19 QuantifiedInterpolants, 70444 SizeOfPredicates, 12 NumberOfNonLiveVariables, 232 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 22 InterpolantComputations, 8 PerfectInterpolantSequences, 66/331 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...