./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-VMCAI2004-Ex2_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_909069ba-21fc-42c8-aabe-97676a55bcc6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_909069ba-21fc-42c8-aabe-97676a55bcc6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_909069ba-21fc-42c8-aabe-97676a55bcc6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_909069ba-21fc-42c8-aabe-97676a55bcc6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-VMCAI2004-Ex2_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_909069ba-21fc-42c8-aabe-97676a55bcc6/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_909069ba-21fc-42c8-aabe-97676a55bcc6/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f679dfb8dfa1325a053f9e19d78c019079eb5e5e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 12:32:49,355 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 12:32:49,356 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 12:32:49,364 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 12:32:49,364 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 12:32:49,365 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 12:32:49,366 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 12:32:49,367 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 12:32:49,368 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 12:32:49,369 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 12:32:49,370 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 12:32:49,370 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 12:32:49,371 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 12:32:49,372 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 12:32:49,372 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 12:32:49,373 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 12:32:49,374 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 12:32:49,375 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 12:32:49,377 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 12:32:49,378 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 12:32:49,379 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 12:32:49,380 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 12:32:49,383 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 12:32:49,383 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 12:32:49,383 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 12:32:49,384 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 12:32:49,385 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 12:32:49,386 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 12:32:49,386 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 12:32:49,387 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 12:32:49,388 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 12:32:49,388 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 12:32:49,388 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 12:32:49,388 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 12:32:49,390 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 12:32:49,391 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 12:32:49,391 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_909069ba-21fc-42c8-aabe-97676a55bcc6/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-23 12:32:49,402 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 12:32:49,402 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 12:32:49,403 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 12:32:49,403 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 12:32:49,403 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 12:32:49,404 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 12:32:49,404 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 12:32:49,404 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 12:32:49,404 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 12:32:49,404 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 12:32:49,404 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 12:32:49,405 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 12:32:49,405 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 12:32:49,405 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 12:32:49,405 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 12:32:49,406 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 12:32:49,406 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 12:32:49,406 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 12:32:49,406 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 12:32:49,406 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 12:32:49,406 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 12:32:49,406 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 12:32:49,407 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 12:32:49,407 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 12:32:49,407 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 12:32:49,407 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 12:32:49,407 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 12:32:49,407 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 12:32:49,407 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 12:32:49,408 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 12:32:49,408 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 12:32:49,408 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 12:32:49,408 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 12:32:49,408 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 12:32:49,408 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 12:32:49,408 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 12:32:49,408 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_909069ba-21fc-42c8-aabe-97676a55bcc6/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f679dfb8dfa1325a053f9e19d78c019079eb5e5e [2018-11-23 12:32:49,432 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 12:32:49,441 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 12:32:49,444 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 12:32:49,445 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 12:32:49,445 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 12:32:49,446 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_909069ba-21fc-42c8-aabe-97676a55bcc6/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-VMCAI2004-Ex2_false-no-overflow.c [2018-11-23 12:32:49,489 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_909069ba-21fc-42c8-aabe-97676a55bcc6/bin-2019/utaipan/data/97c68a758/29962d47c47a4036b96ba8ef9744a29a/FLAG46a8b4b55 [2018-11-23 12:32:49,813 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 12:32:49,813 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_909069ba-21fc-42c8-aabe-97676a55bcc6/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-VMCAI2004-Ex2_false-no-overflow.c [2018-11-23 12:32:49,818 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_909069ba-21fc-42c8-aabe-97676a55bcc6/bin-2019/utaipan/data/97c68a758/29962d47c47a4036b96ba8ef9744a29a/FLAG46a8b4b55 [2018-11-23 12:32:50,245 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_909069ba-21fc-42c8-aabe-97676a55bcc6/bin-2019/utaipan/data/97c68a758/29962d47c47a4036b96ba8ef9744a29a [2018-11-23 12:32:50,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 12:32:50,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 12:32:50,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 12:32:50,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 12:32:50,252 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 12:32:50,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:32:50" (1/1) ... [2018-11-23 12:32:50,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58a31ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:50, skipping insertion in model container [2018-11-23 12:32:50,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:32:50" (1/1) ... [2018-11-23 12:32:50,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 12:32:50,273 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 12:32:50,383 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:32:50,385 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 12:32:50,394 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:32:50,403 INFO L195 MainTranslator]: Completed translation [2018-11-23 12:32:50,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:50 WrapperNode [2018-11-23 12:32:50,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 12:32:50,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 12:32:50,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 12:32:50,404 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 12:32:50,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:50" (1/1) ... [2018-11-23 12:32:50,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:50" (1/1) ... [2018-11-23 12:32:50,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 12:32:50,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 12:32:50,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 12:32:50,423 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 12:32:50,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:50" (1/1) ... [2018-11-23 12:32:50,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:50" (1/1) ... [2018-11-23 12:32:50,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:50" (1/1) ... [2018-11-23 12:32:50,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:50" (1/1) ... [2018-11-23 12:32:50,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:50" (1/1) ... [2018-11-23 12:32:50,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:50" (1/1) ... [2018-11-23 12:32:50,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:50" (1/1) ... [2018-11-23 12:32:50,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 12:32:50,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 12:32:50,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 12:32:50,441 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 12:32:50,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_909069ba-21fc-42c8-aabe-97676a55bcc6/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 12:32:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 12:32:50,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 12:32:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 12:32:50,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 12:32:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 12:32:50,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 12:32:50,644 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 12:32:50,644 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 12:32:50,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:32:50 BoogieIcfgContainer [2018-11-23 12:32:50,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 12:32:50,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 12:32:50,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 12:32:50,648 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 12:32:50,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:32:50" (1/3) ... [2018-11-23 12:32:50,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5c68fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:32:50, skipping insertion in model container [2018-11-23 12:32:50,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:50" (2/3) ... [2018-11-23 12:32:50,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5c68fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:32:50, skipping insertion in model container [2018-11-23 12:32:50,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:32:50" (3/3) ... [2018-11-23 12:32:50,651 INFO L112 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-VMCAI2004-Ex2_false-no-overflow.c [2018-11-23 12:32:50,659 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 12:32:50,664 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-23 12:32:50,675 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-23 12:32:50,699 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 12:32:50,699 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 12:32:50,699 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 12:32:50,699 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 12:32:50,699 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 12:32:50,699 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 12:32:50,700 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 12:32:50,700 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 12:32:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-23 12:32:50,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-23 12:32:50,720 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:32:50,721 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:32:50,723 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 12:32:50,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:32:50,728 INFO L82 PathProgramCache]: Analyzing trace with hash -37667266, now seen corresponding path program 1 times [2018-11-23 12:32:50,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:32:50,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:32:50,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:32:50,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:32:50,769 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:32:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:32:50,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:32:50,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:32:50,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 12:32:50,832 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 12:32:50,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 12:32:50,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 12:32:50,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 12:32:50,853 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2018-11-23 12:32:50,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:32:50,890 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-11-23 12:32:50,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 12:32:50,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-23 12:32:50,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:32:50,898 INFO L225 Difference]: With dead ends: 24 [2018-11-23 12:32:50,898 INFO L226 Difference]: Without dead ends: 12 [2018-11-23 12:32:50,901 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 12:32:50,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-23 12:32:50,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-23 12:32:50,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-23 12:32:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-23 12:32:50,930 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2018-11-23 12:32:50,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:32:50,930 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-23 12:32:50,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 12:32:50,931 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-23 12:32:50,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-23 12:32:50,931 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:32:50,931 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:32:50,932 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 12:32:50,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:32:50,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1167685199, now seen corresponding path program 1 times [2018-11-23 12:32:50,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:32:50,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:32:50,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:32:50,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:32:50,935 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:32:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:32:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:32:50,963 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #28#return; [?] CALL call #t~ret1 := main(); [?] havoc ~x~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~x~0 := #t~nondet0;havoc #t~nondet0; VAL [main_~x~0=1073741826] [?] assume !!(~x~0 >= 0); VAL [main_~x~0=1073741826] [?] assume -2 * ~x~0 <= 2147483647; VAL [main_~x~0=1073741826] [?] assume !(-2 * ~x~0 >= -2147483648); VAL [main_~x~0=1073741826] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L15] havoc ~x~0; [L16] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L16] ~x~0 := #t~nondet0; [L16] havoc #t~nondet0; VAL [~x~0=1073741826] [L17-L19] assume !!(~x~0 >= 0); VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 <= 2147483647; VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 >= -2147483648; VAL [~x~0=1073741826] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L15] havoc ~x~0; [L16] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L16] ~x~0 := #t~nondet0; [L16] havoc #t~nondet0; VAL [~x~0=1073741826] [L17-L19] assume !!(~x~0 >= 0); VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 <= 2147483647; VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 >= -2147483648; VAL [~x~0=1073741826] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L15] havoc ~x~0; [L16] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L16] ~x~0 := #t~nondet0; [L16] havoc #t~nondet0; VAL [~x~0=1073741826] [L17-L19] COND FALSE !(!(~x~0 >= 0)) VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 <= 2147483647; VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 >= -2147483648; VAL [~x~0=1073741826] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L15] havoc ~x~0; [L16] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L16] ~x~0 := #t~nondet0; [L16] havoc #t~nondet0; VAL [~x~0=1073741826] [L17-L19] COND FALSE !(!(~x~0 >= 0)) VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 <= 2147483647; VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 >= -2147483648; VAL [~x~0=1073741826] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L15] havoc ~x~0; [L16] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L16] ~x~0 := #t~nondet0; [L16] havoc #t~nondet0; VAL [~x~0=1073741826] [L17-L19] COND FALSE !(!(~x~0 >= 0)) VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 <= 2147483647; VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 >= -2147483648; VAL [~x~0=1073741826] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L15] havoc ~x~0; [L16] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L16] ~x~0 := #t~nondet0; [L16] havoc #t~nondet0; VAL [~x~0=1073741826] [L17-L19] COND FALSE !(!(~x~0 >= 0)) VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 <= 2147483647; VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 >= -2147483648; VAL [~x~0=1073741826] [L15] int x; [L16] x = __VERIFIER_nondet_int() [L17] COND TRUE x >= 0 VAL [x=1073741826] [L18] -2*x VAL [x=1073741826] ----- [2018-11-23 12:32:50,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:32:50 BoogieIcfgContainer [2018-11-23 12:32:50,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 12:32:50,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 12:32:50,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 12:32:50,985 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 12:32:50,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:32:50" (3/4) ... [2018-11-23 12:32:50,987 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #28#return; [?] CALL call #t~ret1 := main(); [?] havoc ~x~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~x~0 := #t~nondet0;havoc #t~nondet0; VAL [main_~x~0=1073741826] [?] assume !!(~x~0 >= 0); VAL [main_~x~0=1073741826] [?] assume -2 * ~x~0 <= 2147483647; VAL [main_~x~0=1073741826] [?] assume !(-2 * ~x~0 >= -2147483648); VAL [main_~x~0=1073741826] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L15] havoc ~x~0; [L16] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L16] ~x~0 := #t~nondet0; [L16] havoc #t~nondet0; VAL [~x~0=1073741826] [L17-L19] assume !!(~x~0 >= 0); VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 <= 2147483647; VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 >= -2147483648; VAL [~x~0=1073741826] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L15] havoc ~x~0; [L16] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L16] ~x~0 := #t~nondet0; [L16] havoc #t~nondet0; VAL [~x~0=1073741826] [L17-L19] assume !!(~x~0 >= 0); VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 <= 2147483647; VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 >= -2147483648; VAL [~x~0=1073741826] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L15] havoc ~x~0; [L16] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L16] ~x~0 := #t~nondet0; [L16] havoc #t~nondet0; VAL [~x~0=1073741826] [L17-L19] COND FALSE !(!(~x~0 >= 0)) VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 <= 2147483647; VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 >= -2147483648; VAL [~x~0=1073741826] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L15] havoc ~x~0; [L16] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L16] ~x~0 := #t~nondet0; [L16] havoc #t~nondet0; VAL [~x~0=1073741826] [L17-L19] COND FALSE !(!(~x~0 >= 0)) VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 <= 2147483647; VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 >= -2147483648; VAL [~x~0=1073741826] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L15] havoc ~x~0; [L16] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L16] ~x~0 := #t~nondet0; [L16] havoc #t~nondet0; VAL [~x~0=1073741826] [L17-L19] COND FALSE !(!(~x~0 >= 0)) VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 <= 2147483647; VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 >= -2147483648; VAL [~x~0=1073741826] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L15] havoc ~x~0; [L16] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L16] ~x~0 := #t~nondet0; [L16] havoc #t~nondet0; VAL [~x~0=1073741826] [L17-L19] COND FALSE !(!(~x~0 >= 0)) VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 <= 2147483647; VAL [~x~0=1073741826] [L18] assert -2 * ~x~0 >= -2147483648; VAL [~x~0=1073741826] [L15] int x; [L16] x = __VERIFIER_nondet_int() [L17] COND TRUE x >= 0 VAL [x=1073741826] [L18] -2*x VAL [x=1073741826] ----- [2018-11-23 12:32:51,017 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_909069ba-21fc-42c8-aabe-97676a55bcc6/bin-2019/utaipan/witness.graphml [2018-11-23 12:32:51,017 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 12:32:51,018 INFO L168 Benchmark]: Toolchain (without parser) took 769.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 958.2 MB in the beginning and 1.1 GB in the end (delta: -136.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:32:51,019 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:32:51,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.94 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 12:32:51,020 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.07 ms. Allocated memory is still 1.0 GB. Free memory is still 947.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:32:51,020 INFO L168 Benchmark]: Boogie Preprocessor took 17.52 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 12:32:51,021 INFO L168 Benchmark]: RCFGBuilder took 204.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -174.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2018-11-23 12:32:51,021 INFO L168 Benchmark]: TraceAbstraction took 338.64 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-11-23 12:32:51,022 INFO L168 Benchmark]: Witness Printer took 32.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:32:51,024 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 153.94 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.07 ms. Allocated memory is still 1.0 GB. Free memory is still 947.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.52 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 204.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -174.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 338.64 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Witness Printer took 32.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x; [L16] x = __VERIFIER_nondet_int() [L17] COND TRUE x >= 0 VAL [x=1073741826] [L18] -2*x VAL [x=1073741826] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 4 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11 SDtfs, 5 SDslu, 8 SDs, 0 SdLazy, 9 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...