./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_00ac9c23-3782-40bd-9d89-d616fc627351/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_00ac9c23-3782-40bd-9d89-d616fc627351/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_00ac9c23-3782-40bd-9d89-d616fc627351/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_00ac9c23-3782-40bd-9d89-d616fc627351/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_00ac9c23-3782-40bd-9d89-d616fc627351/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_00ac9c23-3782-40bd-9d89-d616fc627351/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 16d1f6cd78d7cc073e9077e844c6915079dedfe5 .............................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:46,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:46,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:46,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:46,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:46,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:46,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:46,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:46,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:46,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:46,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:46,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:46,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:46,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:46,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:46,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:46,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:46,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:46,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:46,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:46,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:46,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:46,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:46,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:46,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:46,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:46,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:46,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:46,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:46,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:46,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:46,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:46,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:46,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:46,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:46,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:46,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:46,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:46,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:46,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:46,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:46,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_00ac9c23-3782-40bd-9d89-d616fc627351/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-10-22 11:25:46,477 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:46,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:46,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:46,478 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:46,479 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:46,479 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:46,479 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:46,479 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:46,479 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:46,479 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:46,479 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:46,480 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:46,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:46,480 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:25:46,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:46,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:46,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:46,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:46,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:46,481 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 11:25:46,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:46,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:46,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:46,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:46,483 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:46,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:46,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:46,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:46,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:46,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:46,483 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:46,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:46,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:46,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:46,484 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_00ac9c23-3782-40bd-9d89-d616fc627351/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16d1f6cd78d7cc073e9077e844c6915079dedfe5 [2019-10-22 11:25:46,507 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:46,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:46,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:46,520 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:46,521 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:46,521 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_00ac9c23-3782-40bd-9d89-d616fc627351/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig1.c [2019-10-22 11:25:46,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_00ac9c23-3782-40bd-9d89-d616fc627351/bin/utaipan/data/d069b94ad/8b10dda39935453c8830bea83d6e61c7/FLAG3e7d877ce [2019-10-22 11:25:46,931 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:46,931 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_00ac9c23-3782-40bd-9d89-d616fc627351/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig1.c [2019-10-22 11:25:46,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_00ac9c23-3782-40bd-9d89-d616fc627351/bin/utaipan/data/d069b94ad/8b10dda39935453c8830bea83d6e61c7/FLAG3e7d877ce [2019-10-22 11:25:47,366 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_00ac9c23-3782-40bd-9d89-d616fc627351/bin/utaipan/data/d069b94ad/8b10dda39935453c8830bea83d6e61c7 [2019-10-22 11:25:47,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:47,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:47,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:47,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:47,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:47,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:47" (1/1) ... [2019-10-22 11:25:47,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c87219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:47, skipping insertion in model container [2019-10-22 11:25:47,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:47" (1/1) ... [2019-10-22 11:25:47,386 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:47,400 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:47,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:47,518 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:47,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:47,601 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:47,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:47 WrapperNode [2019-10-22 11:25:47,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:47,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:47,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:47,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:47,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:47" (1/1) ... [2019-10-22 11:25:47,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:47" (1/1) ... [2019-10-22 11:25:47,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:47,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:47,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:47,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:47,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:47" (1/1) ... [2019-10-22 11:25:47,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:47" (1/1) ... [2019-10-22 11:25:47,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:47" (1/1) ... [2019-10-22 11:25:47,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:47" (1/1) ... [2019-10-22 11:25:47,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:47" (1/1) ... [2019-10-22 11:25:47,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:47" (1/1) ... [2019-10-22 11:25:47,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:47" (1/1) ... [2019-10-22 11:25:47,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:47,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:47,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:47,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:47,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_00ac9c23-3782-40bd-9d89-d616fc627351/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:47,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:47,830 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:47,830 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 11:25:47,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:47 BoogieIcfgContainer [2019-10-22 11:25:47,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:47,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:47,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:47,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:47,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:47" (1/3) ... [2019-10-22 11:25:47,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf3d0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:47, skipping insertion in model container [2019-10-22 11:25:47,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:47" (2/3) ... [2019-10-22 11:25:47,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf3d0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:47, skipping insertion in model container [2019-10-22 11:25:47,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:47" (3/3) ... [2019-10-22 11:25:47,840 INFO L109 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig1.c [2019-10-22 11:25:47,849 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:47,856 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 11:25:47,870 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 11:25:47,893 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:47,893 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:47,894 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:47,894 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:47,894 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:47,894 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:47,894 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:47,896 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-10-22 11:25:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 11:25:47,916 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:47,917 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 11:25:47,919 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:25:47,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:47,924 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-10-22 11:25:47,932 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:47,932 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529926306] [2019-10-22 11:25:47,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:47,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:47,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:48,061 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529926306] [2019-10-22 11:25:48,062 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:48,062 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 11:25:48,063 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930138840] [2019-10-22 11:25:48,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:48,069 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:48,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:48,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:48,081 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2019-10-22 11:25:48,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:48,118 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-10-22 11:25:48,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:48,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-10-22 11:25:48,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:48,126 INFO L225 Difference]: With dead ends: 14 [2019-10-22 11:25:48,127 INFO L226 Difference]: Without dead ends: 5 [2019-10-22 11:25:48,129 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:48,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-10-22 11:25:48,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-10-22 11:25:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-10-22 11:25:48,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-10-22 11:25:48,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-10-22 11:25:48,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:48,155 INFO L462 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-10-22 11:25:48,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:48,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-10-22 11:25:48,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 11:25:48,156 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:48,156 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 11:25:48,156 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:25:48,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:48,157 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-10-22 11:25:48,157 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:48,157 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365841620] [2019-10-22 11:25:48,157 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:48,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:48,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:48,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365841620] [2019-10-22 11:25:48,174 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:48,174 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:48,174 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837634825] [2019-10-22 11:25:48,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:48,176 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:48,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:48,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:48,176 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 3 states. [2019-10-22 11:25:48,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:48,184 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-10-22 11:25:48,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:48,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-10-22 11:25:48,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:48,185 INFO L225 Difference]: With dead ends: 5 [2019-10-22 11:25:48,185 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:25:48,186 INFO L600 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 [2019-10-22 11:25:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:25:48,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:25:48,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:25:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:25:48,187 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-10-22 11:25:48,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:48,187 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:25:48,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:48,187 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:25:48,187 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:25:48,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:25:48,203 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:25:48,204 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:25:48,204 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:25:48,204 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-10-22 11:25:48,204 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-10-22 11:25:48,204 INFO L439 ceAbstractionStarter]: At program point L19(lines 13 20) the Hoare annotation is: (<= ULTIMATE.start_main_~y~0 2147483647) [2019-10-22 11:25:48,204 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-10-22 11:25:48,205 INFO L443 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-10-22 11:25:48,205 INFO L439 ceAbstractionStarter]: At program point L16-2(lines 16 18) the Hoare annotation is: (<= ULTIMATE.start_main_~y~0 2147483647) [2019-10-22 11:25:48,205 INFO L443 ceAbstractionStarter]: For program point L16-3(lines 16 18) no Hoare annotation was computed. [2019-10-22 11:25:48,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:25:48 BoogieIcfgContainer [2019-10-22 11:25:48,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:25:48,216 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:25:48,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:25:48,217 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:25:48,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:47" (3/4) ... [2019-10-22 11:25:48,220 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:25:48,230 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:25:48,230 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 11:25:48,266 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_00ac9c23-3782-40bd-9d89-d616fc627351/bin/utaipan/witness.graphml [2019-10-22 11:25:48,266 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:25:48,268 INFO L168 Benchmark]: Toolchain (without parser) took 898.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -144.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:48,268 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:48,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -189.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:48,269 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:48,270 INFO L168 Benchmark]: Boogie Preprocessor took 16.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:48,270 INFO L168 Benchmark]: RCFGBuilder took 184.76 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:48,271 INFO L168 Benchmark]: TraceAbstraction took 383.13 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:48,271 INFO L168 Benchmark]: Witness Printer took 49.54 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:48,274 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 229.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -189.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 184.76 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 383.13 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 49.54 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: y <= 2147483647 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Result: SAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 6 SDslu, 0 SDs, 0 SdLazy, 9 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...