./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_564de981-eecc-4b5f-97d3-e4091696f91a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_564de981-eecc-4b5f-97d3-e4091696f91a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_564de981-eecc-4b5f-97d3-e4091696f91a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_564de981-eecc-4b5f-97d3-e4091696f91a/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_564de981-eecc-4b5f-97d3-e4091696f91a/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_564de981-eecc-4b5f-97d3-e4091696f91a/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8fcad1cc5c987e49a6afac90dd5119b31f7d391b ........................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:42:50,200 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:42:50,201 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:42:50,212 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:42:50,212 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:42:50,213 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:42:50,214 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:42:50,215 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:42:50,217 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:42:50,218 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:42:50,219 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:42:50,219 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:42:50,220 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:42:50,221 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:42:50,222 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:42:50,223 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:42:50,224 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:42:50,226 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:42:50,227 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:42:50,229 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:42:50,230 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:42:50,231 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:42:50,234 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:42:50,234 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:42:50,234 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:42:50,235 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:42:50,236 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:42:50,237 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:42:50,238 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:42:50,239 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:42:50,239 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:42:50,240 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:42:50,241 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:42:50,241 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:42:50,242 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:42:50,242 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:42:50,243 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_564de981-eecc-4b5f-97d3-e4091696f91a/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-10-27 05:42:50,256 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:42:50,256 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:42:50,257 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:42:50,257 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-27 05:42:50,258 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 05:42:50,258 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 05:42:50,258 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 05:42:50,258 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:42:50,258 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 05:42:50,258 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:42:50,259 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:42:50,259 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:42:50,259 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:42:50,259 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:42:50,259 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-10-27 05:42:50,260 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:42:50,260 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:42:50,262 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:42:50,262 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:42:50,262 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:42:50,262 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:42:50,262 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:42:50,263 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:42:50,263 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:42:50,263 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:42:50,263 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 05:42:50,263 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:42:50,263 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:42:50,264 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_564de981-eecc-4b5f-97d3-e4091696f91a/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcad1cc5c987e49a6afac90dd5119b31f7d391b [2018-10-27 05:42:50,297 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:42:50,308 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:42:50,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:42:50,312 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:42:50,312 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:42:50,313 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_564de981-eecc-4b5f-97d3-e4091696f91a/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1_true-termination_true-no-overflow.c [2018-10-27 05:42:50,363 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_564de981-eecc-4b5f-97d3-e4091696f91a/bin-2019/uautomizer/data/10dd93247/32e619c834bb4af29526d218f87d21b9/FLAG0a3ee0f76 [2018-10-27 05:42:50,747 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:42:50,748 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_564de981-eecc-4b5f-97d3-e4091696f91a/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1_true-termination_true-no-overflow.c [2018-10-27 05:42:50,753 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_564de981-eecc-4b5f-97d3-e4091696f91a/bin-2019/uautomizer/data/10dd93247/32e619c834bb4af29526d218f87d21b9/FLAG0a3ee0f76 [2018-10-27 05:42:50,766 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_564de981-eecc-4b5f-97d3-e4091696f91a/bin-2019/uautomizer/data/10dd93247/32e619c834bb4af29526d218f87d21b9 [2018-10-27 05:42:50,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:42:50,771 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:42:50,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:42:50,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:42:50,779 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:42:50,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:42:50" (1/1) ... [2018-10-27 05:42:50,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af8d4b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:50, skipping insertion in model container [2018-10-27 05:42:50,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:42:50" (1/1) ... [2018-10-27 05:42:50,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:42:50,811 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:42:50,938 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:42:50,941 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:42:50,952 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:42:50,963 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:42:50,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:50 WrapperNode [2018-10-27 05:42:50,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:42:50,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:42:50,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:42:50,965 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:42:50,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:50" (1/1) ... [2018-10-27 05:42:50,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:50" (1/1) ... [2018-10-27 05:42:50,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:50" (1/1) ... [2018-10-27 05:42:50,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:50" (1/1) ... [2018-10-27 05:42:50,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:50" (1/1) ... [2018-10-27 05:42:50,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:50" (1/1) ... [2018-10-27 05:42:50,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:50" (1/1) ... [2018-10-27 05:42:50,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:42:50,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:42:50,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:42:50,994 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:42:50,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_564de981-eecc-4b5f-97d3-e4091696f91a/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:42:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:42:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:42:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:42:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-10-27 05:42:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:42:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:42:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:42:51,368 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:42:51,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:51 BoogieIcfgContainer [2018-10-27 05:42:51,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:42:51,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:42:51,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:42:51,374 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:42:51,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:42:50" (1/3) ... [2018-10-27 05:42:51,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717c651f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:51, skipping insertion in model container [2018-10-27 05:42:51,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:50" (2/3) ... [2018-10-27 05:42:51,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717c651f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:51, skipping insertion in model container [2018-10-27 05:42:51,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:51" (3/3) ... [2018-10-27 05:42:51,379 INFO L112 eAbstractionObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-easy1_true-termination_true-no-overflow.c [2018-10-27 05:42:51,391 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:42:51,408 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-10-27 05:42:51,432 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-10-27 05:42:51,486 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 05:42:51,487 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:42:51,487 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:42:51,487 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:42:51,487 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:42:51,488 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:42:51,488 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:42:51,488 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:42:51,489 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:42:51,517 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-10-27 05:42:51,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-27 05:42:51,523 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:42:51,523 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:42:51,531 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:42:51,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:42:51,538 INFO L82 PathProgramCache]: Analyzing trace with hash 512030507, now seen corresponding path program 1 times [2018-10-27 05:42:51,540 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:42:51,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:42:51,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:51,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:42:51,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:42:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:42:51,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:42:51,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:42:51,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:42:51,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:42:51,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:42:51,761 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2018-10-27 05:42:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:42:51,849 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-10-27 05:42:51,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:42:51,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-10-27 05:42:51,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:42:51,859 INFO L225 Difference]: With dead ends: 35 [2018-10-27 05:42:51,859 INFO L226 Difference]: Without dead ends: 23 [2018-10-27 05:42:51,861 INFO L605 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 [2018-10-27 05:42:51,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-27 05:42:51,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-10-27 05:42:51,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-27 05:42:51,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-10-27 05:42:51,896 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 9 [2018-10-27 05:42:51,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:42:51,896 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-10-27 05:42:51,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:42:51,897 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-10-27 05:42:51,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 05:42:51,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:42:51,897 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:42:51,898 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:42:51,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:42:51,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1306923416, now seen corresponding path program 1 times [2018-10-27 05:42:51,898 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:42:51,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:42:51,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:51,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:42:51,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:42:51,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:42:51,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:42:51,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:42:51,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:42:51,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:42:51,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:42:51,944 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 3 states. [2018-10-27 05:42:51,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:42:51,987 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-10-27 05:42:51,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:42:51,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-10-27 05:42:51,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:42:51,989 INFO L225 Difference]: With dead ends: 21 [2018-10-27 05:42:51,989 INFO L226 Difference]: Without dead ends: 19 [2018-10-27 05:42:51,990 INFO L605 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 [2018-10-27 05:42:51,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-27 05:42:51,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-27 05:42:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-27 05:42:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-10-27 05:42:51,999 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 10 [2018-10-27 05:42:52,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:42:52,001 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-10-27 05:42:52,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:42:52,001 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-10-27 05:42:52,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-27 05:42:52,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:42:52,002 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:42:52,002 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:42:52,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:42:52,003 INFO L82 PathProgramCache]: Analyzing trace with hash 490630032, now seen corresponding path program 1 times [2018-10-27 05:42:52,003 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:42:52,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:42:52,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:52,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:42:52,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:42:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:42:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-27 05:42:52,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:42:52,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:42:52,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:42:52,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:42:52,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:42:52,051 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2018-10-27 05:42:52,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:42:52,088 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-10-27 05:42:52,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:42:52,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-10-27 05:42:52,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:42:52,089 INFO L225 Difference]: With dead ends: 19 [2018-10-27 05:42:52,089 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 05:42:52,090 INFO L605 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 [2018-10-27 05:42:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 05:42:52,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 05:42:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 05:42:52,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 05:42:52,091 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-10-27 05:42:52,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:42:52,091 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 05:42:52,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:42:52,091 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 05:42:52,091 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 05:42:52,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 05:42:52,136 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-27 05:42:52,136 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:42:52,137 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:42:52,137 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-27 05:42:52,137 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 05:42:52,137 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 05:42:52,137 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 22) no Hoare annotation was computed. [2018-10-27 05:42:52,137 INFO L425 ceAbstractionStarter]: For program point L15(lines 15 19) no Hoare annotation was computed. [2018-10-27 05:42:52,137 INFO L421 ceAbstractionStarter]: At program point L15-2(lines 14 20) the Hoare annotation is: (<= 0 main_~x~0) [2018-10-27 05:42:52,138 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 11 22) no Hoare annotation was computed. [2018-10-27 05:42:52,138 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2018-10-27 05:42:52,138 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-10-27 05:42:52,138 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 22) the Hoare annotation is: true [2018-10-27 05:42:52,138 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-10-27 05:42:52,138 INFO L425 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-10-27 05:42:52,138 INFO L425 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-10-27 05:42:52,138 INFO L425 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-10-27 05:42:52,139 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 20) no Hoare annotation was computed. [2018-10-27 05:42:52,139 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2018-10-27 05:42:52,139 INFO L425 ceAbstractionStarter]: For program point L14-3(lines 14 20) no Hoare annotation was computed. [2018-10-27 05:42:52,139 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-10-27 05:42:52,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:42:52 BoogieIcfgContainer [2018-10-27 05:42:52,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:42:52,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 05:42:52,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 05:42:52,150 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 05:42:52,150 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:51" (3/4) ... [2018-10-27 05:42:52,153 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 05:42:52,159 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-27 05:42:52,159 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-27 05:42:52,163 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-10-27 05:42:52,163 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-27 05:42:52,163 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 05:42:52,197 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_564de981-eecc-4b5f-97d3-e4091696f91a/bin-2019/uautomizer/witness.graphml [2018-10-27 05:42:52,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 05:42:52,198 INFO L168 Benchmark]: Toolchain (without parser) took 1428.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 959.7 MB in the beginning and 1.1 GB in the end (delta: -147.7 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. [2018-10-27 05:42:52,200 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:42:52,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.62 ms. Allocated memory is still 1.0 GB. Free memory was 959.7 MB in the beginning and 948.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-10-27 05:42:52,201 INFO L168 Benchmark]: Boogie Preprocessor took 28.61 ms. Allocated memory is still 1.0 GB. Free memory is still 948.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:42:52,202 INFO L168 Benchmark]: RCFGBuilder took 375.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -197.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:42:52,202 INFO L168 Benchmark]: TraceAbstraction took 779.19 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: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 11.5 GB. [2018-10-27 05:42:52,203 INFO L168 Benchmark]: Witness Printer took 48.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:42:52,206 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 192.62 ms. Allocated memory is still 1.0 GB. Free memory was 959.7 MB in the beginning and 948.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.61 ms. Allocated memory is still 1.0 GB. Free memory is still 948.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 375.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -197.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 779.19 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: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 11.5 GB. * Witness Printer took 48.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: 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: 14]: Loop Invariant Derived loop invariant: 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 4 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 31 SDtfs, 13 SDslu, 20 SDs, 0 SdLazy, 29 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 7 HoareAnnotationTreeSize, 5 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...