./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f570ff8e-6c8c-42bb-8782-4522e9187bd2/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f570ff8e-6c8c-42bb-8782-4522e9187bd2/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f570ff8e-6c8c-42bb-8782-4522e9187bd2/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f570ff8e-6c8c-42bb-8782-4522e9187bd2/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f570ff8e-6c8c-42bb-8782-4522e9187bd2/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f570ff8e-6c8c-42bb-8782-4522e9187bd2/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 b51d3ff9a76866bd9c6637bca261a8433dd4524e .................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-5842f4b [2018-11-18 16:36:56,029 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:36:56,031 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:36:56,037 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:36:56,038 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:36:56,038 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:36:56,039 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:36:56,040 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:36:56,041 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:36:56,042 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:36:56,043 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:36:56,043 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:36:56,043 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:36:56,044 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:36:56,045 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:36:56,045 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:36:56,046 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:36:56,047 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:36:56,049 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:36:56,050 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:36:56,051 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:36:56,051 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:36:56,053 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:36:56,053 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:36:56,053 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:36:56,054 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:36:56,055 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:36:56,055 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:36:56,056 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:36:56,057 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:36:56,057 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:36:56,057 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:36:56,057 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:36:56,057 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:36:56,058 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:36:56,059 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:36:56,059 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f570ff8e-6c8c-42bb-8782-4522e9187bd2/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-18 16:36:56,069 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:36:56,069 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:36:56,070 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:36:56,070 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:36:56,070 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:36:56,071 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:36:56,071 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:36:56,071 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 16:36:56,071 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:36:56,071 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:36:56,071 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 16:36:56,071 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 16:36:56,072 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:36:56,072 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:36:56,072 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 16:36:56,072 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:36:56,073 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:36:56,073 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:36:56,073 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:36:56,073 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:36:56,073 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 16:36:56,073 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:36:56,073 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:36:56,074 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:36:56,074 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:36:56,074 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:36:56,074 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:36:56,074 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:36:56,074 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:36:56,075 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:36:56,075 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:36:56,075 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:36:56,075 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 16:36:56,075 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:36:56,075 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:36:56,075 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 16:36:56,076 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_f570ff8e-6c8c-42bb-8782-4522e9187bd2/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 -> b51d3ff9a76866bd9c6637bca261a8433dd4524e [2018-11-18 16:36:56,099 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:36:56,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:36:56,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:36:56,112 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:36:56,113 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:36:56,113 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f570ff8e-6c8c-42bb-8782-4522e9187bd2/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b_false-no-overflow.c [2018-11-18 16:36:56,153 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f570ff8e-6c8c-42bb-8782-4522e9187bd2/bin-2019/utaipan/data/5e6e8b7c5/b5f8149e04df467694b639d5700dcd42/FLAGb16b8e527 [2018-11-18 16:36:56,554 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:36:56,555 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f570ff8e-6c8c-42bb-8782-4522e9187bd2/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b_false-no-overflow.c [2018-11-18 16:36:56,559 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f570ff8e-6c8c-42bb-8782-4522e9187bd2/bin-2019/utaipan/data/5e6e8b7c5/b5f8149e04df467694b639d5700dcd42/FLAGb16b8e527 [2018-11-18 16:36:56,569 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f570ff8e-6c8c-42bb-8782-4522e9187bd2/bin-2019/utaipan/data/5e6e8b7c5/b5f8149e04df467694b639d5700dcd42 [2018-11-18 16:36:56,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:36:56,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:36:56,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:36:56,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:36:56,575 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:36:56,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:36:56" (1/1) ... [2018-11-18 16:36:56,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfef79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:56, skipping insertion in model container [2018-11-18 16:36:56,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:36:56" (1/1) ... [2018-11-18 16:36:56,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:36:56,594 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:36:56,700 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:36:56,702 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:36:56,712 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:36:56,720 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:36:56,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:56 WrapperNode [2018-11-18 16:36:56,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:36:56,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:36:56,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:36:56,722 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:36:56,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:56" (1/1) ... [2018-11-18 16:36:56,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:56" (1/1) ... [2018-11-18 16:36:56,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:36:56,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:36:56,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:36:56,733 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:36:56,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:56" (1/1) ... [2018-11-18 16:36:56,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:56" (1/1) ... [2018-11-18 16:36:56,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:56" (1/1) ... [2018-11-18 16:36:56,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:56" (1/1) ... [2018-11-18 16:36:56,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:56" (1/1) ... [2018-11-18 16:36:56,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:56" (1/1) ... [2018-11-18 16:36:56,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:56" (1/1) ... [2018-11-18 16:36:56,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:36:56,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:36:56,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:36:56,748 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:36:56,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f570ff8e-6c8c-42bb-8782-4522e9187bd2/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 [2018-11-18 16:36:56,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:36:56,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:36:56,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:36:56,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:36:56,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:36:56,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:36:56,939 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:36:56,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:36:56 BoogieIcfgContainer [2018-11-18 16:36:56,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:36:56,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:36:56,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:36:56,942 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:36:56,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:36:56" (1/3) ... [2018-11-18 16:36:56,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313372f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:36:56, skipping insertion in model container [2018-11-18 16:36:56,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:56" (2/3) ... [2018-11-18 16:36:56,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313372f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:36:56, skipping insertion in model container [2018-11-18 16:36:56,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:36:56" (3/3) ... [2018-11-18 16:36:56,944 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-counterex1b_false-no-overflow.c [2018-11-18 16:36:56,950 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:36:56,955 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-18 16:36:56,966 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-18 16:36:56,992 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:36:56,992 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:36:56,992 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:36:56,992 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:36:56,992 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:36:56,992 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:36:56,992 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:36:56,992 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:36:57,005 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-11-18 16:36:57,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 16:36:57,010 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:36:57,010 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:36:57,012 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 16:36:57,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:36:57,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1001547538, now seen corresponding path program 1 times [2018-11-18 16:36:57,019 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:36:57,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:57,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:36:57,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:57,059 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:36:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:36:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:36:57,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:36:57,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:36:57,095 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:36:57,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:36:57,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:36:57,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:36:57,106 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-11-18 16:36:57,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:36:57,118 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2018-11-18 16:36:57,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:36:57,119 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-11-18 16:36:57,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:36:57,125 INFO L225 Difference]: With dead ends: 59 [2018-11-18 16:36:57,125 INFO L226 Difference]: Without dead ends: 27 [2018-11-18 16:36:57,127 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:36:57,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-18 16:36:57,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-18 16:36:57,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-18 16:36:57,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2018-11-18 16:36:57,149 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 9 [2018-11-18 16:36:57,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:36:57,149 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2018-11-18 16:36:57,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:36:57,150 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2018-11-18 16:36:57,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 16:36:57,150 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:36:57,150 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:36:57,151 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 16:36:57,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:36:57,151 INFO L82 PathProgramCache]: Analyzing trace with hash -53190641, now seen corresponding path program 1 times [2018-11-18 16:36:57,151 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:36:57,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:57,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:36:57,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:57,153 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:36:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:36:57,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:36:57,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:36:57,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:36:57,199 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:36:57,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:36:57,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:36:57,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:36:57,201 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2018-11-18 16:36:57,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:36:57,211 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2018-11-18 16:36:57,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:36:57,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-18 16:36:57,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:36:57,212 INFO L225 Difference]: With dead ends: 27 [2018-11-18 16:36:57,212 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 16:36:57,213 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:36:57,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 16:36:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-18 16:36:57,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 16:36:57,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-18 16:36:57,217 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 12 [2018-11-18 16:36:57,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:36:57,217 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-18 16:36:57,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:36:57,218 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-18 16:36:57,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 16:36:57,218 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:36:57,218 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:36:57,218 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 16:36:57,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:36:57,219 INFO L82 PathProgramCache]: Analyzing trace with hash -53190586, now seen corresponding path program 1 times [2018-11-18 16:36:57,219 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:36:57,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:57,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:36:57,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:57,220 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:36:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:36:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:36:57,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:36:57,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:36:57,239 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:36:57,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:36:57,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:36:57,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:36:57,239 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 3 states. [2018-11-18 16:36:57,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:36:57,288 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2018-11-18 16:36:57,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:36:57,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-18 16:36:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:36:57,289 INFO L225 Difference]: With dead ends: 44 [2018-11-18 16:36:57,290 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 16:36:57,290 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:36:57,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 16:36:57,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-11-18 16:36:57,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 16:36:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2018-11-18 16:36:57,294 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 12 [2018-11-18 16:36:57,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:36:57,295 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2018-11-18 16:36:57,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:36:57,295 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2018-11-18 16:36:57,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 16:36:57,295 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:36:57,295 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:36:57,296 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 16:36:57,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:36:57,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1648909799, now seen corresponding path program 1 times [2018-11-18 16:36:57,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:36:57,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:57,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:36:57,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:57,297 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:36:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:36:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:36:57,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:36:57,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:36:57,314 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:36:57,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:36:57,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:36:57,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:36:57,314 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand 3 states. [2018-11-18 16:36:57,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:36:57,322 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2018-11-18 16:36:57,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:36:57,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-18 16:36:57,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:36:57,323 INFO L225 Difference]: With dead ends: 40 [2018-11-18 16:36:57,323 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 16:36:57,324 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:36:57,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 16:36:57,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-18 16:36:57,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 16:36:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-11-18 16:36:57,328 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 13 [2018-11-18 16:36:57,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:36:57,328 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-11-18 16:36:57,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:36:57,328 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2018-11-18 16:36:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 16:36:57,329 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:36:57,329 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:36:57,329 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 16:36:57,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:36:57,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1648908101, now seen corresponding path program 1 times [2018-11-18 16:36:57,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:36:57,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:57,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:36:57,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:57,331 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:36:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:36:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:36:57,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:36:57,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:36:57,377 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:36:57,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 16:36:57,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 16:36:57,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 16:36:57,378 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 4 states. [2018-11-18 16:36:57,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:36:57,446 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2018-11-18 16:36:57,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 16:36:57,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-18 16:36:57,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:36:57,447 INFO L225 Difference]: With dead ends: 66 [2018-11-18 16:36:57,447 INFO L226 Difference]: Without dead ends: 64 [2018-11-18 16:36:57,448 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 16:36:57,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-18 16:36:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-11-18 16:36:57,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-18 16:36:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2018-11-18 16:36:57,456 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 13 [2018-11-18 16:36:57,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:36:57,457 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2018-11-18 16:36:57,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 16:36:57,457 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2018-11-18 16:36:57,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 16:36:57,457 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:36:57,457 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:36:57,458 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 16:36:57,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:36:57,458 INFO L82 PathProgramCache]: Analyzing trace with hash -54890504, now seen corresponding path program 1 times [2018-11-18 16:36:57,458 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:36:57,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:57,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:36:57,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:57,460 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:36:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:36:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:36:57,488 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:36:57,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:36:57 BoogieIcfgContainer [2018-11-18 16:36:57,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:36:57,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:36:57,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:36:57,505 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:36:57,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:36:56" (3/4) ... [2018-11-18 16:36:57,507 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 16:36:57,540 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f570ff8e-6c8c-42bb-8782-4522e9187bd2/bin-2019/utaipan/witness.graphml [2018-11-18 16:36:57,540 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:36:57,540 INFO L168 Benchmark]: Toolchain (without parser) took 968.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -103.7 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. [2018-11-18 16:36:57,541 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:36:57,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.98 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-18 16:36:57,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.90 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. [2018-11-18 16:36:57,542 INFO L168 Benchmark]: Boogie Preprocessor took 14.22 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. [2018-11-18 16:36:57,543 INFO L168 Benchmark]: RCFGBuilder took 191.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:36:57,543 INFO L168 Benchmark]: TraceAbstraction took 564.55 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: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 11.5 GB. [2018-11-18 16:36:57,543 INFO L168 Benchmark]: Witness Printer took 35.34 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:36:57,546 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 147.98 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.90 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 14.22 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 191.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 564.55 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: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 11.5 GB. * Witness Printer took 35.34 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x, y, n; [L15] n = __VERIFIER_nondet_int() [L16] x = __VERIFIER_nondet_int() [L17] y = __VERIFIER_nondet_int() [L18] COND TRUE x >= 0 VAL [n=2147483647, x=0, y=2147483647] [L19] y >= 0 && __VERIFIER_nondet_int() != 0 [L19] y >= 0 && __VERIFIER_nondet_int() != 0 VAL [__VERIFIER_nondet_int()=0, n=2147483647, x=0, y=2147483647, y >= 0 && __VERIFIER_nondet_int() != 0=0] [L19] COND FALSE !(y >= 0 && __VERIFIER_nondet_int() != 0) [L22] EXPR x - 1 [L22] x = x - 1 VAL [n=2147483647, x=-1, y=2147483647] [L23] y <= n && __VERIFIER_nondet_int() != 0 [L23] y <= n && __VERIFIER_nondet_int() != 0 VAL [__VERIFIER_nondet_int()=1, n=2147483647, x=-1, y=2147483647, y <= n && __VERIFIER_nondet_int() != 0=1] [L23] COND TRUE y <= n && __VERIFIER_nondet_int() != 0 [L24] y + 1 VAL [n=2147483647, x=-1, y=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 6 error locations. UNSAFE Result, 0.5s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 134 SDtfs, 75 SDslu, 52 SDs, 0 SdLazy, 43 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1178 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...