./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1b43ce72b37c8e17b4dbab62d6d09279867a7da3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 13:39:57,285 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:39:57,286 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:39:57,295 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:39:57,295 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:39:57,296 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:39:57,296 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:39:57,298 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:39:57,299 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:39:57,300 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:39:57,300 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:39:57,301 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:39:57,301 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:39:57,302 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:39:57,303 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:39:57,303 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:39:57,304 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:39:57,305 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:39:57,307 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:39:57,308 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:39:57,308 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:39:57,309 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:39:57,311 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:39:57,311 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:39:57,311 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:39:57,312 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:39:57,312 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:39:57,313 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:39:57,314 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:39:57,314 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:39:57,315 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:39:57,315 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:39:57,315 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:39:57,315 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:39:57,316 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:39:57,317 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:39:57,317 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-18 13:39:57,327 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:39:57,327 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:39:57,328 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:39:57,328 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 13:39:57,328 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:39:57,328 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:39:57,328 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:39:57,329 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:39:57,329 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 13:39:57,329 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:39:57,329 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:39:57,329 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:39:57,329 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:39:57,329 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:39:57,330 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 13:39:57,330 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:39:57,330 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:39:57,330 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:39:57,330 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:39:57,330 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:39:57,330 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:39:57,330 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:39:57,331 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:39:57,331 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:39:57,331 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:39:57,331 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:39:57,331 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 13:39:57,331 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:39:57,331 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:39:57,332 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_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b43ce72b37c8e17b4dbab62d6d09279867a7da3 [2018-11-18 13:39:57,353 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:39:57,361 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:39:57,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:39:57,363 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:39:57,363 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:39:57,364 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops_true-termination_true-no-overflow.c [2018-11-18 13:39:57,399 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/bin-2019/uautomizer/data/df5e4b2cd/bb18e10f8d06434a9ff417e05fab2198/FLAG5a4a24c43 [2018-11-18 13:39:57,732 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:39:57,733 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops_true-termination_true-no-overflow.c [2018-11-18 13:39:57,737 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/bin-2019/uautomizer/data/df5e4b2cd/bb18e10f8d06434a9ff417e05fab2198/FLAG5a4a24c43 [2018-11-18 13:39:58,157 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/bin-2019/uautomizer/data/df5e4b2cd/bb18e10f8d06434a9ff417e05fab2198 [2018-11-18 13:39:58,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:39:58,161 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 13:39:58,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:39:58,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:39:58,163 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:39:58,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:39:58" (1/1) ... [2018-11-18 13:39:58,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c10af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:58, skipping insertion in model container [2018-11-18 13:39:58,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:39:58" (1/1) ... [2018-11-18 13:39:58,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:39:58,183 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:39:58,280 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:39:58,282 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:39:58,292 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:39:58,300 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:39:58,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:58 WrapperNode [2018-11-18 13:39:58,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:39:58,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:39:58,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:39:58,301 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:39:58,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:58" (1/1) ... [2018-11-18 13:39:58,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:58" (1/1) ... [2018-11-18 13:39:58,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:58" (1/1) ... [2018-11-18 13:39:58,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:58" (1/1) ... [2018-11-18 13:39:58,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:58" (1/1) ... [2018-11-18 13:39:58,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:58" (1/1) ... [2018-11-18 13:39:58,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:58" (1/1) ... [2018-11-18 13:39:58,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:39:58,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:39:58,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:39:58,320 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:39:58,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:39:58,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:39:58,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:39:58,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:39:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 13:39:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:39:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:39:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:39:58,518 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:39:58,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:39:58 BoogieIcfgContainer [2018-11-18 13:39:58,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:39:58,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:39:58,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:39:58,521 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:39:58,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:39:58" (1/3) ... [2018-11-18 13:39:58,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7d6267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:39:58, skipping insertion in model container [2018-11-18 13:39:58,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:39:58" (2/3) ... [2018-11-18 13:39:58,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7d6267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:39:58, skipping insertion in model container [2018-11-18 13:39:58,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:39:58" (3/3) ... [2018-11-18 13:39:58,524 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-loops_true-termination_true-no-overflow.c [2018-11-18 13:39:58,531 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:39:58,537 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-18 13:39:58,546 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-18 13:39:58,565 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:39:58,566 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:39:58,566 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:39:58,566 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:39:58,566 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:39:58,566 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:39:58,566 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:39:58,567 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:39:58,567 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:39:58,582 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-18 13:39:58,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 13:39:58,587 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:39:58,588 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:39:58,590 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:39:58,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:39:58,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1984601080, now seen corresponding path program 1 times [2018-11-18 13:39:58,596 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:39:58,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:39:58,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:58,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:39:58,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:39:58,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:39:58,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:39:58,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:39:58,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:39:58,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:39:58,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:39:58,717 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-11-18 13:39:58,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:39:58,772 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2018-11-18 13:39:58,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:39:58,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 13:39:58,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:39:58,781 INFO L225 Difference]: With dead ends: 44 [2018-11-18 13:39:58,781 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 13:39:58,784 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:39:58,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 13:39:58,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-18 13:39:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 13:39:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-11-18 13:39:58,813 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2018-11-18 13:39:58,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:39:58,814 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-18 13:39:58,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:39:58,814 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-11-18 13:39:58,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 13:39:58,814 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:39:58,814 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:39:58,815 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:39:58,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:39:58,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1393091410, now seen corresponding path program 1 times [2018-11-18 13:39:58,815 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:39:58,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:39:58,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:58,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:39:58,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:39:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:39:58,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:39:58,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:39:58,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:39:58,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:39:58,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:39:58,839 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2018-11-18 13:39:58,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:39:58,863 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-11-18 13:39:58,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:39:58,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 13:39:58,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:39:58,864 INFO L225 Difference]: With dead ends: 20 [2018-11-18 13:39:58,864 INFO L226 Difference]: Without dead ends: 19 [2018-11-18 13:39:58,865 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:39:58,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-18 13:39:58,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-11-18 13:39:58,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 13:39:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-11-18 13:39:58,868 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2018-11-18 13:39:58,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:39:58,868 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-11-18 13:39:58,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:39:58,869 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-11-18 13:39:58,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 13:39:58,869 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:39:58,869 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:39:58,870 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:39:58,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:39:58,870 INFO L82 PathProgramCache]: Analyzing trace with hash 235577051, now seen corresponding path program 1 times [2018-11-18 13:39:58,870 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:39:58,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:39:58,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:58,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:39:58,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:39:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:39:58,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:39:58,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:39:58,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:39:58,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:39:58,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:39:58,895 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2018-11-18 13:39:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:39:58,931 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2018-11-18 13:39:58,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:39:58,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-18 13:39:58,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:39:58,932 INFO L225 Difference]: With dead ends: 26 [2018-11-18 13:39:58,932 INFO L226 Difference]: Without dead ends: 25 [2018-11-18 13:39:58,932 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:39:58,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-18 13:39:58,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2018-11-18 13:39:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-18 13:39:58,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2018-11-18 13:39:58,935 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2018-11-18 13:39:58,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:39:58,936 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2018-11-18 13:39:58,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:39:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2018-11-18 13:39:58,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 13:39:58,936 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:39:58,936 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:39:58,937 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:39:58,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:39:58,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1287045947, now seen corresponding path program 1 times [2018-11-18 13:39:58,937 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:39:58,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:39:58,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:58,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:39:58,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:39:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:39:58,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:39:58,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:39:58,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:39:58,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:39:58,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:39:58,954 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2018-11-18 13:39:58,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:39:58,967 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2018-11-18 13:39:58,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:39:58,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-18 13:39:58,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:39:58,968 INFO L225 Difference]: With dead ends: 22 [2018-11-18 13:39:58,969 INFO L226 Difference]: Without dead ends: 21 [2018-11-18 13:39:58,969 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:39:58,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-18 13:39:58,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-11-18 13:39:58,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 13:39:58,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-11-18 13:39:58,973 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2018-11-18 13:39:58,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:39:58,973 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-11-18 13:39:58,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:39:58,973 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2018-11-18 13:39:58,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 13:39:58,974 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:39:58,974 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:39:58,974 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:39:58,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:39:58,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1212701869, now seen corresponding path program 1 times [2018-11-18 13:39:58,975 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:39:58,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:39:58,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:58,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:39:58,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:39:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:39:59,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 13:39:59,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:39:59,006 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:39:59,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:39:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:39:59,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:39:59,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:39:59,119 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:39:59,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2018-11-18 13:39:59,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:39:59,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:39:59,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:39:59,120 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 6 states. [2018-11-18 13:39:59,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:39:59,205 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2018-11-18 13:39:59,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 13:39:59,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-11-18 13:39:59,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:39:59,205 INFO L225 Difference]: With dead ends: 38 [2018-11-18 13:39:59,206 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 13:39:59,206 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-11-18 13:39:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 13:39:59,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 13:39:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 13:39:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 13:39:59,207 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-11-18 13:39:59,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:39:59,207 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:39:59,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:39:59,208 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 13:39:59,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 13:39:59,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 13:39:59,243 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 13:39:59,244 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:39:59,244 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:39:59,244 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 13:39:59,244 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 13:39:59,244 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 13:39:59,244 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-18 13:39:59,244 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 13 30) no Hoare annotation was computed. [2018-11-18 13:39:59,244 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-18 13:39:59,244 INFO L425 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-18 13:39:59,244 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 25) no Hoare annotation was computed. [2018-11-18 13:39:59,244 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2018-11-18 13:39:59,244 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 27) no Hoare annotation was computed. [2018-11-18 13:39:59,244 INFO L421 ceAbstractionStarter]: At program point L19-3(lines 19 27) the Hoare annotation is: (<= main_~x~0 1073741823) [2018-11-18 13:39:59,244 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 13 30) no Hoare annotation was computed. [2018-11-18 13:39:59,245 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-18 13:39:59,245 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 13 30) the Hoare annotation is: true [2018-11-18 13:39:59,245 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-18 13:39:59,245 INFO L425 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2018-11-18 13:39:59,245 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 24) no Hoare annotation was computed. [2018-11-18 13:39:59,245 INFO L421 ceAbstractionStarter]: At program point L22-3(lines 22 24) the Hoare annotation is: (and (<= 1 main_~y~0) (<= main_~x~0 1073741823) (<= 0 main_~x~0)) [2018-11-18 13:39:59,245 INFO L425 ceAbstractionStarter]: For program point L18(lines 18 28) no Hoare annotation was computed. [2018-11-18 13:39:59,245 INFO L425 ceAbstractionStarter]: For program point L18-1(lines 18 28) no Hoare annotation was computed. [2018-11-18 13:39:59,245 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-18 13:39:59,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:39:59 BoogieIcfgContainer [2018-11-18 13:39:59,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:39:59,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:39:59,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:39:59,253 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:39:59,253 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:39:58" (3/4) ... [2018-11-18 13:39:59,256 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 13:39:59,260 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 13:39:59,260 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 13:39:59,263 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-18 13:39:59,263 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 13:39:59,263 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 13:39:59,291 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_986f0380-8d94-4ef3-97f8-2d136a6c6e0e/bin-2019/uautomizer/witness.graphml [2018-11-18 13:39:59,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:39:59,292 INFO L168 Benchmark]: Toolchain (without parser) took 1131.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 958.1 MB in the beginning and 1.0 GB in the end (delta: -82.0 MB). Peak memory consumption was 45.9 MB. Max. memory is 11.5 GB. [2018-11-18 13:39:59,293 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:39:59,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.75 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:39:59,293 INFO L168 Benchmark]: Boogie Preprocessor took 18.53 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:39:59,294 INFO L168 Benchmark]: RCFGBuilder took 198.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2018-11-18 13:39:59,294 INFO L168 Benchmark]: TraceAbstraction took 733.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 72.1 MB). Peak memory consumption was 72.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:39:59,294 INFO L168 Benchmark]: Witness Printer took 38.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:39:59,296 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 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 139.75 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.53 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 198.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 733.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 72.1 MB). Peak memory consumption was 72.1 MB. Max. memory is 11.5 GB. * Witness Printer took 38.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 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: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (1 <= y && x <= 1073741823) && 0 <= x - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: x <= 1073741823 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 4 error locations. SAFE Result, 0.6s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 60 SDslu, 56 SDs, 0 SdLazy, 71 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 14 NumberOfFragments, 17 HoareAnnotationTreeSize, 6 FomulaSimplifications, 301 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 72 ConstructedInterpolants, 3 QuantifiedInterpolants, 2131 SizeOfPredicates, 0 NumberOfNonLiveVariables, 36 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...