./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6aa1e92a-14eb-4fa8-bca7-96df89928a50/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6aa1e92a-14eb-4fa8-bca7-96df89928a50/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6aa1e92a-14eb-4fa8-bca7-96df89928a50/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6aa1e92a-14eb-4fa8-bca7-96df89928a50/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_6aa1e92a-14eb-4fa8-bca7-96df89928a50/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6aa1e92a-14eb-4fa8-bca7-96df89928a50/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 0.1.23-635dfa2 [2018-12-09 16:44:50,561 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 16:44:50,562 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 16:44:50,568 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 16:44:50,568 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 16:44:50,568 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 16:44:50,569 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 16:44:50,570 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 16:44:50,571 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 16:44:50,571 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 16:44:50,571 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 16:44:50,572 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 16:44:50,572 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 16:44:50,573 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 16:44:50,573 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 16:44:50,573 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 16:44:50,574 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 16:44:50,575 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 16:44:50,576 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 16:44:50,576 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 16:44:50,577 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 16:44:50,578 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 16:44:50,579 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 16:44:50,579 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 16:44:50,579 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 16:44:50,579 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 16:44:50,580 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 16:44:50,580 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 16:44:50,581 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 16:44:50,581 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 16:44:50,581 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 16:44:50,582 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 16:44:50,582 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 16:44:50,582 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 16:44:50,582 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 16:44:50,583 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 16:44:50,583 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6aa1e92a-14eb-4fa8-bca7-96df89928a50/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-12-09 16:44:50,590 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 16:44:50,590 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 16:44:50,591 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 16:44:50,591 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 16:44:50,591 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 16:44:50,591 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 16:44:50,591 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 16:44:50,591 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 16:44:50,591 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 16:44:50,591 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 16:44:50,591 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 16:44:50,592 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 16:44:50,592 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 16:44:50,592 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 16:44:50,592 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 16:44:50,592 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 16:44:50,592 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 16:44:50,592 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 16:44:50,592 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 16:44:50,592 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 16:44:50,593 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-09 16:44:50,593 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 16:44:50,593 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 16:44:50,593 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 16:44:50,593 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 16:44:50,593 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 16:44:50,593 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 16:44:50,593 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 16:44:50,593 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 16:44:50,593 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 16:44:50,594 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 16:44:50,594 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 16:44:50,594 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 16:44:50,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 16:44:50,594 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 16:44:50,594 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_6aa1e92a-14eb-4fa8-bca7-96df89928a50/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 [2018-12-09 16:44:50,611 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 16:44:50,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 16:44:50,620 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 16:44:50,620 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 16:44:50,621 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 16:44:50,621 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6aa1e92a-14eb-4fa8-bca7-96df89928a50/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b_false-no-overflow.c [2018-12-09 16:44:50,655 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6aa1e92a-14eb-4fa8-bca7-96df89928a50/bin-2019/utaipan/data/429785a29/b83a704aea504f8c8a9b2b8248edadd4/FLAGd96f59fd5 [2018-12-09 16:44:51,068 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 16:44:51,068 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6aa1e92a-14eb-4fa8-bca7-96df89928a50/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b_false-no-overflow.c [2018-12-09 16:44:51,071 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6aa1e92a-14eb-4fa8-bca7-96df89928a50/bin-2019/utaipan/data/429785a29/b83a704aea504f8c8a9b2b8248edadd4/FLAGd96f59fd5 [2018-12-09 16:44:51,079 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6aa1e92a-14eb-4fa8-bca7-96df89928a50/bin-2019/utaipan/data/429785a29/b83a704aea504f8c8a9b2b8248edadd4 [2018-12-09 16:44:51,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 16:44:51,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 16:44:51,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 16:44:51,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 16:44:51,084 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 16:44:51,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:44:51" (1/1) ... [2018-12-09 16:44:51,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cecaa61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:44:51, skipping insertion in model container [2018-12-09 16:44:51,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:44:51" (1/1) ... [2018-12-09 16:44:51,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 16:44:51,104 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 16:44:51,189 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:44:51,191 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 16:44:51,200 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:44:51,208 INFO L195 MainTranslator]: Completed translation [2018-12-09 16:44:51,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:44:51 WrapperNode [2018-12-09 16:44:51,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 16:44:51,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 16:44:51,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 16:44:51,209 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 16:44:51,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:44:51" (1/1) ... [2018-12-09 16:44:51,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:44:51" (1/1) ... [2018-12-09 16:44:51,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 16:44:51,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 16:44:51,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 16:44:51,225 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 16:44:51,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:44:51" (1/1) ... [2018-12-09 16:44:51,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:44:51" (1/1) ... [2018-12-09 16:44:51,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:44:51" (1/1) ... [2018-12-09 16:44:51,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:44:51" (1/1) ... [2018-12-09 16:44:51,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:44:51" (1/1) ... [2018-12-09 16:44:51,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:44:51" (1/1) ... [2018-12-09 16:44:51,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:44:51" (1/1) ... [2018-12-09 16:44:51,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 16:44:51,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 16:44:51,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 16:44:51,242 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 16:44:51,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:44:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6aa1e92a-14eb-4fa8-bca7-96df89928a50/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 [2018-12-09 16:44:51,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 16:44:51,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 16:44:51,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 16:44:51,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 16:44:51,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 16:44:51,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 16:44:51,407 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 16:44:51,407 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-09 16:44:51,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:44:51 BoogieIcfgContainer [2018-12-09 16:44:51,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 16:44:51,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 16:44:51,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 16:44:51,411 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 16:44:51,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:44:51" (1/3) ... [2018-12-09 16:44:51,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b1a003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:44:51, skipping insertion in model container [2018-12-09 16:44:51,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:44:51" (2/3) ... [2018-12-09 16:44:51,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b1a003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:44:51, skipping insertion in model container [2018-12-09 16:44:51,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:44:51" (3/3) ... [2018-12-09 16:44:51,414 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-counterex1b_false-no-overflow.c [2018-12-09 16:44:51,423 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 16:44:51,429 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-09 16:44:51,442 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-09 16:44:51,462 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 16:44:51,462 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 16:44:51,462 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 16:44:51,462 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 16:44:51,462 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 16:44:51,462 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 16:44:51,462 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 16:44:51,462 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 16:44:51,473 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-12-09 16:44:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 16:44:51,476 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:44:51,476 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:44:51,478 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 16:44:51,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:44:51,481 INFO L82 PathProgramCache]: Analyzing trace with hash 257117704, now seen corresponding path program 1 times [2018-12-09 16:44:51,482 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:44:51,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:44:51,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:44:51,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:44:51,515 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:44:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:44:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:44:51,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:44:51,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 16:44:51,551 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:44:51,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 16:44:51,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 16:44:51,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 16:44:51,562 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2018-12-09 16:44:51,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:44:51,574 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2018-12-09 16:44:51,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 16:44:51,574 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2018-12-09 16:44:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:44:51,579 INFO L225 Difference]: With dead ends: 53 [2018-12-09 16:44:51,580 INFO L226 Difference]: Without dead ends: 24 [2018-12-09 16:44:51,581 INFO L631 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 [2018-12-09 16:44:51,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-09 16:44:51,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-09 16:44:51,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-09 16:44:51,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-09 16:44:51,601 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 8 [2018-12-09 16:44:51,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:44:51,602 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-09 16:44:51,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 16:44:51,602 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-12-09 16:44:51,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 16:44:51,602 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:44:51,602 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:44:51,603 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 16:44:51,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:44:51,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2018510573, now seen corresponding path program 1 times [2018-12-09 16:44:51,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:44:51,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:44:51,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:44:51,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:44:51,604 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:44:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:44:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:44:51,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:44:51,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 16:44:51,628 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:44:51,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 16:44:51,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 16:44:51,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:44:51,630 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2018-12-09 16:44:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:44:51,639 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2018-12-09 16:44:51,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 16:44:51,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 16:44:51,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:44:51,640 INFO L225 Difference]: With dead ends: 24 [2018-12-09 16:44:51,640 INFO L226 Difference]: Without dead ends: 23 [2018-12-09 16:44:51,641 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:44:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-09 16:44:51,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-09 16:44:51,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-09 16:44:51,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-12-09 16:44:51,643 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2018-12-09 16:44:51,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:44:51,643 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-12-09 16:44:51,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 16:44:51,644 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-12-09 16:44:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 16:44:51,644 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:44:51,644 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:44:51,644 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 16:44:51,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:44:51,645 INFO L82 PathProgramCache]: Analyzing trace with hash -2018510518, now seen corresponding path program 1 times [2018-12-09 16:44:51,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:44:51,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:44:51,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:44:51,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:44:51,646 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:44:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:44:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:44:51,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:44:51,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 16:44:51,660 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:44:51,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 16:44:51,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 16:44:51,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:44:51,661 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 3 states. [2018-12-09 16:44:51,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:44:51,685 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2018-12-09 16:44:51,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 16:44:51,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 16:44:51,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:44:51,686 INFO L225 Difference]: With dead ends: 38 [2018-12-09 16:44:51,686 INFO L226 Difference]: Without dead ends: 37 [2018-12-09 16:44:51,686 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:44:51,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-09 16:44:51,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2018-12-09 16:44:51,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 16:44:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2018-12-09 16:44:51,690 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 10 [2018-12-09 16:44:51,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:44:51,691 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2018-12-09 16:44:51,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 16:44:51,691 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2018-12-09 16:44:51,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 16:44:51,691 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:44:51,691 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:44:51,691 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 16:44:51,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:44:51,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1850681747, now seen corresponding path program 1 times [2018-12-09 16:44:51,692 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:44:51,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:44:51,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:44:51,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:44:51,693 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:44:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:44:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:44:51,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:44:51,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 16:44:51,706 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:44:51,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 16:44:51,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 16:44:51,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:44:51,707 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand 3 states. [2018-12-09 16:44:51,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:44:51,714 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2018-12-09 16:44:51,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 16:44:51,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-09 16:44:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:44:51,715 INFO L225 Difference]: With dead ends: 34 [2018-12-09 16:44:51,715 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 16:44:51,715 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 16:44:51,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 16:44:51,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-09 16:44:51,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 16:44:51,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2018-12-09 16:44:51,718 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 11 [2018-12-09 16:44:51,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:44:51,719 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2018-12-09 16:44:51,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 16:44:51,719 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2018-12-09 16:44:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 16:44:51,719 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:44:51,719 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:44:51,720 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 16:44:51,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:44:51,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1850683445, now seen corresponding path program 1 times [2018-12-09 16:44:51,720 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:44:51,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:44:51,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:44:51,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:44:51,721 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:44:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:44:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:44:51,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:44:51,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 16:44:51,740 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:44:51,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 16:44:51,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 16:44:51,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:44:51,741 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand 4 states. [2018-12-09 16:44:51,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:44:51,772 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2018-12-09 16:44:51,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:44:51,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-09 16:44:51,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:44:51,774 INFO L225 Difference]: With dead ends: 54 [2018-12-09 16:44:51,774 INFO L226 Difference]: Without dead ends: 52 [2018-12-09 16:44:51,774 INFO L631 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 [2018-12-09 16:44:51,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-09 16:44:51,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-12-09 16:44:51,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-12-09 16:44:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 69 transitions. [2018-12-09 16:44:51,782 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 69 transitions. Word has length 11 [2018-12-09 16:44:51,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:44:51,783 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 69 transitions. [2018-12-09 16:44:51,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 16:44:51,783 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 69 transitions. [2018-12-09 16:44:51,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-09 16:44:51,783 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:44:51,783 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:44:51,784 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 16:44:51,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:44:51,784 INFO L82 PathProgramCache]: Analyzing trace with hash -120754312, now seen corresponding path program 1 times [2018-12-09 16:44:51,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:44:51,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:44:51,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:44:51,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:44:51,786 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:44:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:44:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:44:51,817 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 16:44:51,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:44:51 BoogieIcfgContainer [2018-12-09 16:44:51,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 16:44:51,831 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 16:44:51,831 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 16:44:51,832 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 16:44:51,832 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:44:51" (3/4) ... [2018-12-09 16:44:51,833 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 16:44:51,859 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6aa1e92a-14eb-4fa8-bca7-96df89928a50/bin-2019/utaipan/witness.graphml [2018-12-09 16:44:51,859 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 16:44:51,860 INFO L168 Benchmark]: Toolchain (without parser) took 778.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.7 MB). Free memory was 953.3 MB in the beginning and 1.0 GB in the end (delta: -65.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2018-12-09 16:44:51,861 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:44:51,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 125.84 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 16:44:51,861 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.38 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:44:51,861 INFO L168 Benchmark]: Boogie Preprocessor took 17.07 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:44:51,862 INFO L168 Benchmark]: RCFGBuilder took 165.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.7 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -133.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-12-09 16:44:51,862 INFO L168 Benchmark]: TraceAbstraction took 423.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 57.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 11.5 GB. [2018-12-09 16:44:51,863 INFO L168 Benchmark]: Witness Printer took 27.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:44:51,865 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 125.84 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.38 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.07 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 165.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.7 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -133.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 423.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 57.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 11.5 GB. * Witness Printer took 27.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. 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, 29 locations, 6 error locations. UNSAFE Result, 0.3s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 117 SDtfs, 67 SDslu, 44 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=52occurred 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, 0.0s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 801 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...