./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d0f3ff4f-3a50-4e72-8b24-fc34f24f4887/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d0f3ff4f-3a50-4e72-8b24-fc34f24f4887/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d0f3ff4f-3a50-4e72-8b24-fc34f24f4887/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d0f3ff4f-3a50-4e72-8b24-fc34f24f4887/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d0f3ff4f-3a50-4e72-8b24-fc34f24f4887/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d0f3ff4f-3a50-4e72-8b24-fc34f24f4887/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 36155f521cfe170e9c03fd915618e68821fe0430 ......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 01:45:20,282 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:45:20,283 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:45:20,290 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:45:20,291 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:45:20,291 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:45:20,292 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:45:20,293 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:45:20,294 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:45:20,295 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:45:20,295 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:45:20,295 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:45:20,296 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:45:20,297 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:45:20,298 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:45:20,298 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:45:20,299 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:45:20,300 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:45:20,302 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:45:20,303 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:45:20,304 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:45:20,305 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:45:20,307 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:45:20,307 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:45:20,307 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:45:20,308 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:45:20,309 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:45:20,309 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:45:20,310 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:45:20,311 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:45:20,311 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:45:20,311 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:45:20,312 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:45:20,312 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:45:20,312 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:45:20,313 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:45:20,313 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d0f3ff4f-3a50-4e72-8b24-fc34f24f4887/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-12-09 01:45:20,320 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:45:20,321 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:45:20,321 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:45:20,321 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:45:20,321 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 01:45:20,322 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 01:45:20,322 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 01:45:20,322 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 01:45:20,322 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 01:45:20,322 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 01:45:20,322 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 01:45:20,322 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 01:45:20,323 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 01:45:20,323 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:45:20,323 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 01:45:20,324 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:45:20,324 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:45:20,324 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 01:45:20,324 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:45:20,324 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 01:45:20,324 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-09 01:45:20,324 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:45:20,325 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 01:45:20,325 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:45:20,325 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:45:20,325 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:45:20,325 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:45:20,325 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:45:20,325 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:45:20,326 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:45:20,326 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 01:45:20,326 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 01:45:20,326 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:45:20,326 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 01:45:20,326 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 01:45:20,326 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_d0f3ff4f-3a50-4e72-8b24-fc34f24f4887/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 -> 36155f521cfe170e9c03fd915618e68821fe0430 [2018-12-09 01:45:20,349 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:45:20,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:45:20,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:45:20,360 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:45:20,360 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:45:20,360 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d0f3ff4f-3a50-4e72-8b24-fc34f24f4887/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-09 01:45:20,396 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d0f3ff4f-3a50-4e72-8b24-fc34f24f4887/bin-2019/utaipan/data/d22ba5720/063ada0f1bda4308b4a3fabba7c7dfb2/FLAG1143f57cd [2018-12-09 01:45:20,785 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:45:20,786 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d0f3ff4f-3a50-4e72-8b24-fc34f24f4887/sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-09 01:45:20,789 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d0f3ff4f-3a50-4e72-8b24-fc34f24f4887/bin-2019/utaipan/data/d22ba5720/063ada0f1bda4308b4a3fabba7c7dfb2/FLAG1143f57cd [2018-12-09 01:45:20,796 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d0f3ff4f-3a50-4e72-8b24-fc34f24f4887/bin-2019/utaipan/data/d22ba5720/063ada0f1bda4308b4a3fabba7c7dfb2 [2018-12-09 01:45:20,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:45:20,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:45:20,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:45:20,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:45:20,801 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:45:20,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:45:20" (1/1) ... [2018-12-09 01:45:20,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd2551a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:20, skipping insertion in model container [2018-12-09 01:45:20,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:45:20" (1/1) ... [2018-12-09 01:45:20,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:45:20,816 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:45:20,902 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:45:20,904 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:45:20,912 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:45:20,920 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:45:20,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:20 WrapperNode [2018-12-09 01:45:20,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:45:20,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:45:20,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:45:20,921 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:45:20,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:20" (1/1) ... [2018-12-09 01:45:20,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:20" (1/1) ... [2018-12-09 01:45:20,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:45:20,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:45:20,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:45:20,933 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:45:20,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:20" (1/1) ... [2018-12-09 01:45:20,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:20" (1/1) ... [2018-12-09 01:45:20,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:20" (1/1) ... [2018-12-09 01:45:20,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:20" (1/1) ... [2018-12-09 01:45:20,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:20" (1/1) ... [2018-12-09 01:45:20,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:20" (1/1) ... [2018-12-09 01:45:20,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:20" (1/1) ... [2018-12-09 01:45:20,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:45:20,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:45:20,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:45:20,981 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:45:20,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d0f3ff4f-3a50-4e72-8b24-fc34f24f4887/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 [2018-12-09 01:45:21,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:45:21,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:45:21,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:45:21,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:45:21,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:45:21,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:45:21,118 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:45:21,118 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 01:45:21,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:45:21 BoogieIcfgContainer [2018-12-09 01:45:21,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:45:21,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:45:21,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:45:21,121 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:45:21,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:45:20" (1/3) ... [2018-12-09 01:45:21,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f23cdd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:45:21, skipping insertion in model container [2018-12-09 01:45:21,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:45:20" (2/3) ... [2018-12-09 01:45:21,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f23cdd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:45:21, skipping insertion in model container [2018-12-09 01:45:21,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:45:21" (3/3) ... [2018-12-09 01:45:21,123 INFO L112 eAbstractionObserver]: Analyzing ICFG Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-09 01:45:21,130 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:45:21,134 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-09 01:45:21,145 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-09 01:45:21,164 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:45:21,164 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 01:45:21,164 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:45:21,164 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:45:21,164 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:45:21,164 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:45:21,164 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:45:21,164 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:45:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-12-09 01:45:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 01:45:21,178 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:45:21,179 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:45:21,180 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:45:21,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:45:21,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1148438726, now seen corresponding path program 1 times [2018-12-09 01:45:21,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:45:21,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:21,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:45:21,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:21,219 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:45:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:45:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:45:21,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:45:21,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:45:21,268 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:45:21,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:45:21,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:45:21,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:45:21,280 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2018-12-09 01:45:21,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:45:21,311 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-12-09 01:45:21,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:45:21,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-09 01:45:21,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:45:21,318 INFO L225 Difference]: With dead ends: 26 [2018-12-09 01:45:21,318 INFO L226 Difference]: Without dead ends: 15 [2018-12-09 01:45:21,320 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 [2018-12-09 01:45:21,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-09 01:45:21,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-09 01:45:21,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-09 01:45:21,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-12-09 01:45:21,340 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2018-12-09 01:45:21,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:45:21,341 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2018-12-09 01:45:21,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:45:21,341 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2018-12-09 01:45:21,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 01:45:21,341 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:45:21,341 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:45:21,342 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:45:21,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:45:21,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1241862188, now seen corresponding path program 1 times [2018-12-09 01:45:21,342 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:45:21,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:21,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:45:21,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:21,343 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:45:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:45:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:45:21,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:45:21,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:45:21,359 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:45:21,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:45:21,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:45:21,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:45:21,360 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2018-12-09 01:45:21,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:45:21,374 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2018-12-09 01:45:21,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:45:21,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-09 01:45:21,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:45:21,375 INFO L225 Difference]: With dead ends: 16 [2018-12-09 01:45:21,375 INFO L226 Difference]: Without dead ends: 15 [2018-12-09 01:45:21,376 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 [2018-12-09 01:45:21,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-09 01:45:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2018-12-09 01:45:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-09 01:45:21,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-12-09 01:45:21,379 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2018-12-09 01:45:21,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:45:21,379 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-12-09 01:45:21,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:45:21,379 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-12-09 01:45:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 01:45:21,380 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:45:21,380 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:45:21,380 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:45:21,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:45:21,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1241868178, now seen corresponding path program 1 times [2018-12-09 01:45:21,381 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:45:21,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:21,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:45:21,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:21,382 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:45:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:45:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:45:21,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:45:21,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:45:21,399 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:45:21,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:45:21,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:45:21,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:45:21,399 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2018-12-09 01:45:21,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:45:21,412 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2018-12-09 01:45:21,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:45:21,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-09 01:45:21,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:45:21,413 INFO L225 Difference]: With dead ends: 14 [2018-12-09 01:45:21,413 INFO L226 Difference]: Without dead ends: 13 [2018-12-09 01:45:21,413 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 [2018-12-09 01:45:21,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-09 01:45:21,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-09 01:45:21,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-09 01:45:21,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-12-09 01:45:21,416 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2018-12-09 01:45:21,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:45:21,416 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-12-09 01:45:21,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:45:21,416 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2018-12-09 01:45:21,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 01:45:21,417 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:45:21,417 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:45:21,417 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 01:45:21,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:45:21,417 INFO L82 PathProgramCache]: Analyzing trace with hash -156792087, now seen corresponding path program 1 times [2018-12-09 01:45:21,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:45:21,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:21,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:45:21,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:45:21,418 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:45:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:45:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:45:21,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:45:21,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:45:21,434 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:45:21,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:45:21,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:45:21,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:45:21,434 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2018-12-09 01:45:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:45:21,444 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2018-12-09 01:45:21,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:45:21,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 01:45:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:45:21,445 INFO L225 Difference]: With dead ends: 14 [2018-12-09 01:45:21,445 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 01:45:21,445 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 [2018-12-09 01:45:21,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 01:45:21,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 01:45:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 01:45:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 01:45:21,446 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-12-09 01:45:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:45:21,446 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 01:45:21,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:45:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 01:45:21,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 01:45:21,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 01:45:21,472 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 01:45:21,472 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 01:45:21,472 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 01:45:21,472 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 01:45:21,472 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 01:45:21,472 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 01:45:21,472 INFO L448 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2018-12-09 01:45:21,472 INFO L448 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2018-12-09 01:45:21,472 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2018-12-09 01:45:21,472 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 17 32) no Hoare annotation was computed. [2018-12-09 01:45:21,472 INFO L448 ceAbstractionStarter]: For program point L23(lines 23 29) no Hoare annotation was computed. [2018-12-09 01:45:21,472 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-12-09 01:45:21,473 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 17 32) no Hoare annotation was computed. [2018-12-09 01:45:21,473 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2018-12-09 01:45:21,473 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 17 32) the Hoare annotation is: true [2018-12-09 01:45:21,473 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 29) no Hoare annotation was computed. [2018-12-09 01:45:21,473 INFO L448 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-12-09 01:45:21,473 INFO L444 ceAbstractionStarter]: At program point L26-2(lines 22 30) the Hoare annotation is: (and (<= main_~p~0 2147483647) (<= main_~q~0 2147483647)) [2018-12-09 01:45:21,473 INFO L448 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2018-12-09 01:45:21,473 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-12-09 01:45:21,473 INFO L448 ceAbstractionStarter]: For program point L22-2(lines 22 30) no Hoare annotation was computed. [2018-12-09 01:45:21,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:45:21 BoogieIcfgContainer [2018-12-09 01:45:21,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 01:45:21,480 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:45:21,480 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:45:21,480 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:45:21,481 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:45:21" (3/4) ... [2018-12-09 01:45:21,483 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 01:45:21,486 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 01:45:21,487 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 01:45:21,489 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-09 01:45:21,489 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 01:45:21,489 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 01:45:21,513 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d0f3ff4f-3a50-4e72-8b24-fc34f24f4887/bin-2019/utaipan/witness.graphml [2018-12-09 01:45:21,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:45:21,514 INFO L168 Benchmark]: Toolchain (without parser) took 715.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 962.0 MB in the beginning and 1.1 GB in the end (delta: -103.0 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. [2018-12-09 01:45:21,515 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:45:21,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 121.21 ms. Allocated memory is still 1.0 GB. Free memory was 962.0 MB in the beginning and 951.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:45:21,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.66 ms. Allocated memory is still 1.0 GB. Free memory is still 951.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:45:21,515 INFO L168 Benchmark]: Boogie Preprocessor took 47.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -181.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:45:21,515 INFO L168 Benchmark]: RCFGBuilder took 137.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-12-09 01:45:21,516 INFO L168 Benchmark]: TraceAbstraction took 361.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 11.5 GB. [2018-12-09 01:45:21,516 INFO L168 Benchmark]: Witness Printer took 32.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:45:21,517 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 982.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 121.21 ms. Allocated memory is still 1.0 GB. Free memory was 962.0 MB in the beginning and 951.3 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 11.66 ms. Allocated memory is still 1.0 GB. Free memory is still 951.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -181.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 137.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 361.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 11.5 GB. * Witness Printer took 32.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: 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: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: p <= 2147483647 && q <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 4 error locations. SAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 25 SDslu, 18 SDs, 0 SdLazy, 37 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...