./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f10a5822-5603-4744-b427-a44a911143cf/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f10a5822-5603-4744-b427-a44a911143cf/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f10a5822-5603-4744-b427-a44a911143cf/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f10a5822-5603-4744-b427-a44a911143cf/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f10a5822-5603-4744-b427-a44a911143cf/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f10a5822-5603-4744-b427-a44a911143cf/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 554582d6fc3de8e87f5dd30e5019302b6e1b96be ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 13:17:16,358 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 13:17:16,360 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 13:17:16,368 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 13:17:16,368 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 13:17:16,369 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 13:17:16,369 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 13:17:16,370 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 13:17:16,371 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 13:17:16,372 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 13:17:16,373 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 13:17:16,373 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 13:17:16,374 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 13:17:16,375 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 13:17:16,375 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 13:17:16,376 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 13:17:16,376 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 13:17:16,378 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 13:17:16,379 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 13:17:16,380 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 13:17:16,381 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 13:17:16,381 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 13:17:16,383 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 13:17:16,383 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 13:17:16,383 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 13:17:16,384 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 13:17:16,384 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 13:17:16,385 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 13:17:16,385 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 13:17:16,386 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 13:17:16,386 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 13:17:16,386 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 13:17:16,386 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 13:17:16,386 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 13:17:16,387 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 13:17:16,387 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 13:17:16,387 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f10a5822-5603-4744-b427-a44a911143cf/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-10 13:17:16,395 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 13:17:16,395 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 13:17:16,396 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 13:17:16,396 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 13:17:16,396 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 13:17:16,396 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 13:17:16,396 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 13:17:16,396 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 13:17:16,397 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 13:17:16,397 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 13:17:16,397 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 13:17:16,397 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 13:17:16,397 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 13:17:16,398 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 13:17:16,398 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 13:17:16,398 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 13:17:16,398 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 13:17:16,398 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 13:17:16,398 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 13:17:16,398 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 13:17:16,399 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 13:17:16,399 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 13:17:16,399 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 13:17:16,399 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 13:17:16,399 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 13:17:16,399 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 13:17:16,399 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 13:17:16,400 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 13:17:16,400 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 13:17:16,400 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 13:17:16,400 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 13:17:16,400 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 13:17:16,400 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 13:17:16,400 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_f10a5822-5603-4744-b427-a44a911143cf/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 -> 554582d6fc3de8e87f5dd30e5019302b6e1b96be [2018-11-10 13:17:16,424 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 13:17:16,433 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 13:17:16,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 13:17:16,437 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 13:17:16,437 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 13:17:16,438 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f10a5822-5603-4744-b427-a44a911143cf/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c [2018-11-10 13:17:16,480 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f10a5822-5603-4744-b427-a44a911143cf/bin-2019/utaipan/data/2d8e46280/aefbdd7e2e1040b582519249ceb45d13/FLAG4dcd9705a [2018-11-10 13:17:16,873 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 13:17:16,874 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f10a5822-5603-4744-b427-a44a911143cf/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c [2018-11-10 13:17:16,879 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f10a5822-5603-4744-b427-a44a911143cf/bin-2019/utaipan/data/2d8e46280/aefbdd7e2e1040b582519249ceb45d13/FLAG4dcd9705a [2018-11-10 13:17:16,888 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f10a5822-5603-4744-b427-a44a911143cf/bin-2019/utaipan/data/2d8e46280/aefbdd7e2e1040b582519249ceb45d13 [2018-11-10 13:17:16,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 13:17:16,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 13:17:16,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 13:17:16,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 13:17:16,895 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 13:17:16,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:17:16" (1/1) ... [2018-11-10 13:17:16,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cd11db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:16, skipping insertion in model container [2018-11-10 13:17:16,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:17:16" (1/1) ... [2018-11-10 13:17:16,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 13:17:16,913 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 13:17:17,010 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 13:17:17,013 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 13:17:17,023 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 13:17:17,031 INFO L193 MainTranslator]: Completed translation [2018-11-10 13:17:17,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:17 WrapperNode [2018-11-10 13:17:17,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 13:17:17,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 13:17:17,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 13:17:17,032 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 13:17:17,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:17" (1/1) ... [2018-11-10 13:17:17,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:17" (1/1) ... [2018-11-10 13:17:17,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 13:17:17,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 13:17:17,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 13:17:17,044 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 13:17:17,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:17" (1/1) ... [2018-11-10 13:17:17,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:17" (1/1) ... [2018-11-10 13:17:17,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:17" (1/1) ... [2018-11-10 13:17:17,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:17" (1/1) ... [2018-11-10 13:17:17,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:17" (1/1) ... [2018-11-10 13:17:17,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:17" (1/1) ... [2018-11-10 13:17:17,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:17" (1/1) ... [2018-11-10 13:17:17,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 13:17:17,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 13:17:17,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 13:17:17,053 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 13:17:17,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f10a5822-5603-4744-b427-a44a911143cf/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 [2018-11-10 13:17:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure p [2018-11-10 13:17:17,127 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2018-11-10 13:17:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 13:17:17,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 13:17:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 13:17:17,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 13:17:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 13:17:17,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 13:17:17,246 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 13:17:17,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:17:17 BoogieIcfgContainer [2018-11-10 13:17:17,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 13:17:17,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 13:17:17,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 13:17:17,249 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 13:17:17,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:17:16" (1/3) ... [2018-11-10 13:17:17,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e324602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:17:17, skipping insertion in model container [2018-11-10 13:17:17,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:17" (2/3) ... [2018-11-10 13:17:17,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e324602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:17:17, skipping insertion in model container [2018-11-10 13:17:17,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:17:17" (3/3) ... [2018-11-10 13:17:17,251 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c [2018-11-10 13:17:17,257 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 13:17:17,261 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-10 13:17:17,269 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-10 13:17:17,287 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 13:17:17,287 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 13:17:17,287 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 13:17:17,287 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 13:17:17,288 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 13:17:17,288 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 13:17:17,288 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 13:17:17,288 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 13:17:17,299 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-11-10 13:17:17,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 13:17:17,304 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:17:17,304 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:17:17,307 INFO L424 AbstractCegarLoop]: === Iteration 1 === [pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 13:17:17,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:17:17,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1909339610, now seen corresponding path program 1 times [2018-11-10 13:17:17,314 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 13:17:17,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:17:17,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,351 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 13:17:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:17:17,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:17:17,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:17:17,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 13:17:17,428 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 13:17:17,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 13:17:17,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 13:17:17,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 13:17:17,439 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2018-11-10 13:17:17,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:17:17,537 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2018-11-10 13:17:17,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 13:17:17,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-10 13:17:17,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:17:17,544 INFO L225 Difference]: With dead ends: 49 [2018-11-10 13:17:17,545 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 13:17:17,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 13:17:17,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 13:17:17,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2018-11-10 13:17:17,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-10 13:17:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-10 13:17:17,569 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 10 [2018-11-10 13:17:17,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:17:17,570 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-10 13:17:17,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 13:17:17,570 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-10 13:17:17,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 13:17:17,570 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:17:17,570 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:17:17,571 INFO L424 AbstractCegarLoop]: === Iteration 2 === [pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 13:17:17,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:17:17,572 INFO L82 PathProgramCache]: Analyzing trace with hash 940014271, now seen corresponding path program 1 times [2018-11-10 13:17:17,572 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 13:17:17,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:17:17,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,574 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 13:17:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:17:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:17:17,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:17:17,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 13:17:17,595 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 13:17:17,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 13:17:17,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 13:17:17,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 13:17:17,596 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2018-11-10 13:17:17,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:17:17,605 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-10 13:17:17,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 13:17:17,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-10 13:17:17,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:17:17,606 INFO L225 Difference]: With dead ends: 23 [2018-11-10 13:17:17,606 INFO L226 Difference]: Without dead ends: 22 [2018-11-10 13:17:17,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 13:17:17,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-10 13:17:17,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-10 13:17:17,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-10 13:17:17,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-11-10 13:17:17,610 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 11 [2018-11-10 13:17:17,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:17:17,611 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-11-10 13:17:17,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 13:17:17,611 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-11-10 13:17:17,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 13:17:17,611 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:17:17,611 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:17:17,611 INFO L424 AbstractCegarLoop]: === Iteration 3 === [pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 13:17:17,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:17:17,612 INFO L82 PathProgramCache]: Analyzing trace with hash 940021254, now seen corresponding path program 1 times [2018-11-10 13:17:17,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 13:17:17,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:17:17,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,613 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 13:17:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:17:17,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:17:17,658 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:17:17,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 13:17:17,658 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 13:17:17,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 13:17:17,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 13:17:17,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 13:17:17,659 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2018-11-10 13:17:17,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:17:17,730 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2018-11-10 13:17:17,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 13:17:17,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-10 13:17:17,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:17:17,731 INFO L225 Difference]: With dead ends: 34 [2018-11-10 13:17:17,732 INFO L226 Difference]: Without dead ends: 33 [2018-11-10 13:17:17,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 13:17:17,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-10 13:17:17,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-11-10 13:17:17,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-10 13:17:17,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-11-10 13:17:17,737 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 11 [2018-11-10 13:17:17,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:17:17,737 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-10 13:17:17,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 13:17:17,737 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-11-10 13:17:17,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 13:17:17,738 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:17:17,738 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:17:17,738 INFO L424 AbstractCegarLoop]: === Iteration 4 === [pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 13:17:17,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:17:17,738 INFO L82 PathProgramCache]: Analyzing trace with hash -924112151, now seen corresponding path program 1 times [2018-11-10 13:17:17,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 13:17:17,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:17:17,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,739 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 13:17:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:17:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:17:17,756 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:17:17,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 13:17:17,756 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 13:17:17,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 13:17:17,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 13:17:17,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 13:17:17,757 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2018-11-10 13:17:17,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:17:17,764 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2018-11-10 13:17:17,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 13:17:17,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-10 13:17:17,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:17:17,765 INFO L225 Difference]: With dead ends: 28 [2018-11-10 13:17:17,765 INFO L226 Difference]: Without dead ends: 27 [2018-11-10 13:17:17,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 13:17:17,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-10 13:17:17,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-10 13:17:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-10 13:17:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-11-10 13:17:17,770 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 12 [2018-11-10 13:17:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:17:17,770 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-11-10 13:17:17,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 13:17:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2018-11-10 13:17:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 13:17:17,771 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:17:17,771 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:17:17,771 INFO L424 AbstractCegarLoop]: === Iteration 5 === [pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 13:17:17,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:17:17,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1638077220, now seen corresponding path program 1 times [2018-11-10 13:17:17,772 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 13:17:17,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:17:17,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,773 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 13:17:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:17:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:17:17,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 13:17:17,829 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 13:17:17,829 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-10 13:17:17,831 INFO L202 CegarAbsIntRunner]: [0], [3], [4], [5], [7], [22], [26], [29], [37], [41], [42], [43], [45] [2018-11-10 13:17:17,859 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 13:17:17,859 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 13:17:17,963 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 13:17:17,964 INFO L272 AbstractInterpreter]: Visited 13 different actions 31 times. Never merged. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-11-10 13:17:17,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:17:17,969 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 13:17:18,019 INFO L227 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 61.11% of their original sizes. [2018-11-10 13:17:18,019 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 13:17:18,129 INFO L415 sIntCurrentIteration]: We unified 14 AI predicates to 14 [2018-11-10 13:17:18,129 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 13:17:18,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 13:17:18,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 14 [2018-11-10 13:17:18,130 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 13:17:18,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 13:17:18,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 13:17:18,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-11-10 13:17:18,131 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 10 states. [2018-11-10 13:17:18,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:17:18,547 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-11-10 13:17:18,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 13:17:18,547 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2018-11-10 13:17:18,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:17:18,548 INFO L225 Difference]: With dead ends: 44 [2018-11-10 13:17:18,548 INFO L226 Difference]: Without dead ends: 42 [2018-11-10 13:17:18,548 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-11-10 13:17:18,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-10 13:17:18,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2018-11-10 13:17:18,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-10 13:17:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-10 13:17:18,555 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 15 [2018-11-10 13:17:18,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:17:18,555 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-10 13:17:18,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 13:17:18,555 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-10 13:17:18,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 13:17:18,557 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:17:18,557 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:17:18,557 INFO L424 AbstractCegarLoop]: === Iteration 6 === [pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 13:17:18,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:17:18,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1204199228, now seen corresponding path program 1 times [2018-11-10 13:17:18,558 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 13:17:18,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:18,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:17:18,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:18,559 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 13:17:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:17:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:17:18,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 13:17:18,598 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 13:17:18,598 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-11-10 13:17:18,598 INFO L202 CegarAbsIntRunner]: [0], [3], [4], [10], [13], [15], [17], [22], [26], [29], [39], [41], [42], [43], [45] [2018-11-10 13:17:18,600 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 13:17:18,600 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 13:17:18,626 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 13:17:18,626 INFO L272 AbstractInterpreter]: Visited 15 different actions 37 times. Never merged. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-11-10 13:17:18,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:17:18,628 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 13:17:18,653 INFO L227 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 59.52% of their original sizes. [2018-11-10 13:17:18,653 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 13:17:18,745 INFO L415 sIntCurrentIteration]: We unified 15 AI predicates to 15 [2018-11-10 13:17:18,745 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 13:17:18,745 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 13:17:18,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 15 [2018-11-10 13:17:18,745 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 13:17:18,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 13:17:18,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 13:17:18,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-11-10 13:17:18,746 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 11 states. [2018-11-10 13:17:19,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:17:19,079 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-10 13:17:19,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 13:17:19,079 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2018-11-10 13:17:19,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:17:19,079 INFO L225 Difference]: With dead ends: 46 [2018-11-10 13:17:19,079 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 13:17:19,080 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2018-11-10 13:17:19,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 13:17:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 13:17:19,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 13:17:19,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 13:17:19,081 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-11-10 13:17:19,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:17:19,081 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 13:17:19,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 13:17:19,081 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 13:17:19,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 13:17:19,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 13:17:19,452 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 37 [2018-11-10 13:17:19,709 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 36 [2018-11-10 13:17:19,711 INFO L425 ceAbstractionStarter]: For program point pEXIT(lines 12 22) no Hoare annotation was computed. [2018-11-10 13:17:19,711 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-10 13:17:19,711 INFO L425 ceAbstractionStarter]: For program point L16(lines 16 20) no Hoare annotation was computed. [2018-11-10 13:17:19,712 INFO L425 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2018-11-10 13:17:19,712 INFO L428 ceAbstractionStarter]: At program point pENTRY(lines 12 22) the Hoare annotation is: true [2018-11-10 13:17:19,712 INFO L421 ceAbstractionStarter]: At program point L17-2(line 17) the Hoare annotation is: (let ((.cse2 (* 2 |p_#in~m|)) (.cse3 (* 2 |p_#in~r|))) (or (let ((.cse0 (* 2 p_~r)) (.cse1 (* 2 p_~m))) (and (<= .cse0 0) (<= 0 .cse0) (<= 0 .cse1) (<= .cse1 4294967294) (<= 1 p_~n) (<= (* 2 p_~n) 4294967294))) (< 4294967294 .cse2) (< (* 2 |p_#in~n|) 0) (< .cse2 0) (< 2147483647 |p_#in~n|) (< .cse3 0) (< 4294967294 .cse3))) [2018-11-10 13:17:19,712 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-10 13:17:19,712 INFO L425 ceAbstractionStarter]: For program point L17-3(line 17) no Hoare annotation was computed. [2018-11-10 13:17:19,712 INFO L425 ceAbstractionStarter]: For program point L13(lines 13 21) no Hoare annotation was computed. [2018-11-10 13:17:19,712 INFO L425 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-11-10 13:17:19,713 INFO L425 ceAbstractionStarter]: For program point pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2018-11-10 13:17:19,713 INFO L421 ceAbstractionStarter]: At program point L14-2(line 14) the Hoare annotation is: (let ((.cse3 (* 2 |p_#in~m|)) (.cse4 (* 2 |p_#in~r|))) (or (let ((.cse0 (* 2 p_~r)) (.cse2 (* 2 p_~m)) (.cse1 (* 2 p_~n))) (and (<= .cse0 4294967294) (<= 0 .cse1) (<= 0 .cse2) (<= 2 .cse0) (<= .cse2 4294967294) (<= .cse1 4294967294))) (< 4294967294 .cse3) (< (* 2 |p_#in~n|) 0) (< .cse3 0) (< 2147483647 |p_#in~n|) (< .cse4 0) (< 4294967294 .cse4))) [2018-11-10 13:17:19,713 INFO L425 ceAbstractionStarter]: For program point pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2018-11-10 13:17:19,713 INFO L425 ceAbstractionStarter]: For program point L14-3(line 14) no Hoare annotation was computed. [2018-11-10 13:17:19,713 INFO L425 ceAbstractionStarter]: For program point pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2018-11-10 13:17:19,713 INFO L425 ceAbstractionStarter]: For program point pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2018-11-10 13:17:19,713 INFO L425 ceAbstractionStarter]: For program point pFINAL(lines 12 22) no Hoare annotation was computed. [2018-11-10 13:17:19,713 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 13:17:19,713 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 13:17:19,715 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 13:17:19,715 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 13:17:19,715 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 13:17:19,715 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 13:17:19,715 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 24 32) the Hoare annotation is: true [2018-11-10 13:17:19,716 INFO L421 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (* 2 main_~m~0)) (.cse1 (* 2 main_~n~0))) (and (<= .cse0 4294967294) (<= 0 .cse0) (<= .cse1 4294967294) (<= 0 .cse1) (<= main_~r~0 2147483647) (<= 0 (* 2 main_~r~0)))) [2018-11-10 13:17:19,716 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 24 32) no Hoare annotation was computed. [2018-11-10 13:17:19,716 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-11-10 13:17:19,716 INFO L425 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2018-11-10 13:17:19,716 INFO L425 ceAbstractionStarter]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2018-11-10 13:17:19,716 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 24 32) no Hoare annotation was computed. [2018-11-10 13:17:19,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 01:17:19 BoogieIcfgContainer [2018-11-10 13:17:19,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 13:17:19,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 13:17:19,719 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 13:17:19,719 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 13:17:19,719 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:17:17" (3/4) ... [2018-11-10 13:17:19,722 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 13:17:19,728 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure p [2018-11-10 13:17:19,728 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 13:17:19,728 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 13:17:19,732 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-10 13:17:19,732 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 13:17:19,732 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 13:17:19,771 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f10a5822-5603-4744-b427-a44a911143cf/bin-2019/utaipan/witness.graphml [2018-11-10 13:17:19,771 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 13:17:19,772 INFO L168 Benchmark]: Toolchain (without parser) took 2880.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 960.3 MB in the beginning and 899.8 MB in the end (delta: 60.5 MB). Peak memory consumption was 198.4 MB. Max. memory is 11.5 GB. [2018-11-10 13:17:19,772 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:17:19,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.73 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-11-10 13:17:19,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.04 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:17:19,773 INFO L168 Benchmark]: Boogie Preprocessor took 9.50 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 13:17:19,773 INFO L168 Benchmark]: RCFGBuilder took 193.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 13:17:19,774 INFO L168 Benchmark]: TraceAbstraction took 2471.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 903.2 MB in the end (delta: 222.4 MB). Peak memory consumption was 222.4 MB. Max. memory is 11.5 GB. [2018-11-10 13:17:19,774 INFO L168 Benchmark]: Witness Printer took 52.64 ms. Allocated memory is still 1.2 GB. Free memory was 903.2 MB in the beginning and 899.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-11-10 13:17:19,776 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 139.73 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.04 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.50 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 193.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2471.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 903.2 MB in the end (delta: 222.4 MB). Peak memory consumption was 222.4 MB. Max. memory is 11.5 GB. * Witness Printer took 52.64 ms. Allocated memory is still 1.2 GB. Free memory was 903.2 MB in the beginning and 899.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 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: 14]: 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 - PositiveResult [Line: 14]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 4 error locations. SAFE Result, 2.4s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 97 SDtfs, 123 SDslu, 199 SDs, 0 SdLazy, 106 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.8620689655172413 AbsIntWeakeningRatio, 1.0344827586206897 AbsIntAvgWeakeningVarsNumRemoved, 26.413793103448278 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 29 PreInvPairs, 29 NumberOfFragments, 164 HoareAnnotationTreeSize, 29 FomulaSimplifications, 2450 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 3004 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 1727 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/5 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...