./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b6b9d8b2-f0b8-4cab-b804-ef437bdc82ab/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b6b9d8b2-f0b8-4cab-b804-ef437bdc82ab/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b6b9d8b2-f0b8-4cab-b804-ef437bdc82ab/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b6b9d8b2-f0b8-4cab-b804-ef437bdc82ab/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b6b9d8b2-f0b8-4cab-b804-ef437bdc82ab/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b6b9d8b2-f0b8-4cab-b804-ef437bdc82ab/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 6ff697c57265298ce2261966fa58c440777fc865 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-10-27 05:43:18,637 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:43:18,639 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:43:18,650 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:43:18,650 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:43:18,651 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:43:18,652 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:43:18,654 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:43:18,656 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:43:18,656 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:43:18,657 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:43:18,657 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:43:18,658 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:43:18,660 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:43:18,661 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:43:18,662 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:43:18,662 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:43:18,665 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:43:18,666 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:43:18,668 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:43:18,669 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:43:18,670 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:43:18,673 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:43:18,673 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:43:18,673 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:43:18,674 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:43:18,675 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:43:18,676 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:43:18,677 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:43:18,678 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:43:18,678 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:43:18,678 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:43:18,679 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:43:18,680 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:43:18,681 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:43:18,681 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:43:18,682 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b6b9d8b2-f0b8-4cab-b804-ef437bdc82ab/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-10-27 05:43:18,695 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:43:18,695 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:43:18,696 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:43:18,696 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:43:18,696 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:43:18,696 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:43:18,696 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:43:18,697 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:43:18,697 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:43:18,697 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:43:18,697 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:43:18,698 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:43:18,698 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 05:43:18,698 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:43:18,698 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:43:18,698 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:43:18,698 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:43:18,699 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:43:18,701 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-10-27 05:43:18,701 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:43:18,701 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:43:18,701 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:43:18,701 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:43:18,701 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:43:18,702 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:43:18,702 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:43:18,702 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:43:18,702 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:43:18,702 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:43:18,702 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:43:18,703 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:43:18,704 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:43:18,704 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:43:18,705 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_b6b9d8b2-f0b8-4cab-b804-ef437bdc82ab/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 -> 6ff697c57265298ce2261966fa58c440777fc865 [2018-10-27 05:43:18,733 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:43:18,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:43:18,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:43:18,748 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:43:18,748 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:43:18,749 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b6b9d8b2-f0b8-4cab-b804-ef437bdc82ab/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2_false-no-overflow.c [2018-10-27 05:43:18,790 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b6b9d8b2-f0b8-4cab-b804-ef437bdc82ab/bin-2019/utaipan/data/e8c9281fa/27ecc3f06ff74e6eb5336d8f6aa44d29/FLAGa547ec2dd [2018-10-27 05:43:19,158 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:43:19,159 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b6b9d8b2-f0b8-4cab-b804-ef437bdc82ab/sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2_false-no-overflow.c [2018-10-27 05:43:19,164 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b6b9d8b2-f0b8-4cab-b804-ef437bdc82ab/bin-2019/utaipan/data/e8c9281fa/27ecc3f06ff74e6eb5336d8f6aa44d29/FLAGa547ec2dd [2018-10-27 05:43:19,175 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b6b9d8b2-f0b8-4cab-b804-ef437bdc82ab/bin-2019/utaipan/data/e8c9281fa/27ecc3f06ff74e6eb5336d8f6aa44d29 [2018-10-27 05:43:19,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:43:19,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 05:43:19,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:43:19,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:43:19,184 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:43:19,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:19" (1/1) ... [2018-10-27 05:43:19,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ed68ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:19, skipping insertion in model container [2018-10-27 05:43:19,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:19" (1/1) ... [2018-10-27 05:43:19,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:43:19,218 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:43:19,344 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:43:19,347 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:43:19,361 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:43:19,371 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:43:19,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:19 WrapperNode [2018-10-27 05:43:19,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:43:19,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:43:19,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:43:19,372 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:43:19,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:19" (1/1) ... [2018-10-27 05:43:19,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:19" (1/1) ... [2018-10-27 05:43:19,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:43:19,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:43:19,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:43:19,391 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:43:19,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:19" (1/1) ... [2018-10-27 05:43:19,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:19" (1/1) ... [2018-10-27 05:43:19,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:19" (1/1) ... [2018-10-27 05:43:19,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:19" (1/1) ... [2018-10-27 05:43:19,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:19" (1/1) ... [2018-10-27 05:43:19,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:19" (1/1) ... [2018-10-27 05:43:19,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:19" (1/1) ... [2018-10-27 05:43:19,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:43:19,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:43:19,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:43:19,411 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:43:19,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b6b9d8b2-f0b8-4cab-b804-ef437bdc82ab/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 [2018-10-27 05:43:19,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:43:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:43:19,543 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-10-27 05:43:19,544 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-10-27 05:43:19,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:43:19,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:43:19,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:43:19,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:43:20,082 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:43:20,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:20 BoogieIcfgContainer [2018-10-27 05:43:20,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:43:20,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:43:20,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:43:20,087 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:43:20,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:43:19" (1/3) ... [2018-10-27 05:43:20,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50436afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:20, skipping insertion in model container [2018-10-27 05:43:20,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:19" (2/3) ... [2018-10-27 05:43:20,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50436afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:20, skipping insertion in model container [2018-10-27 05:43:20,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:20" (3/3) ... [2018-10-27 05:43:20,090 INFO L112 eAbstractionObserver]: Analyzing ICFG HarrisLalNoriRajamani-SAS2010-Fig2_false-no-overflow.c [2018-10-27 05:43:20,098 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:43:20,105 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-10-27 05:43:20,119 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-10-27 05:43:20,158 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:43:20,159 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:43:20,159 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:43:20,160 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:43:20,160 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:43:20,160 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:43:20,160 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:43:20,160 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:43:20,180 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-10-27 05:43:20,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-27 05:43:20,189 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:20,189 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:20,191 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:20,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:20,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1533557337, now seen corresponding path program 1 times [2018-10-27 05:43:20,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:20,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:20,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:20,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:20,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:20,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:20,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:43:20,389 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:20,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:43:20,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:43:20,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:20,412 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2018-10-27 05:43:20,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:20,498 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2018-10-27 05:43:20,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:43:20,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-27 05:43:20,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:20,509 INFO L225 Difference]: With dead ends: 59 [2018-10-27 05:43:20,509 INFO L226 Difference]: Without dead ends: 47 [2018-10-27 05:43:20,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:20,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-27 05:43:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-27 05:43:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-27 05:43:20,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2018-10-27 05:43:20,550 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 7 [2018-10-27 05:43:20,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:20,551 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2018-10-27 05:43:20,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:43:20,551 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2018-10-27 05:43:20,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-27 05:43:20,552 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:20,552 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:20,553 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:20,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:20,553 INFO L82 PathProgramCache]: Analyzing trace with hash -295637108, now seen corresponding path program 1 times [2018-10-27 05:43:20,553 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:20,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:20,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:20,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:20,555 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:20,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:20,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:43:20,590 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:20,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:43:20,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:43:20,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:20,592 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand 3 states. [2018-10-27 05:43:20,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:20,641 INFO L93 Difference]: Finished difference Result 74 states and 99 transitions. [2018-10-27 05:43:20,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:43:20,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-10-27 05:43:20,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:20,643 INFO L225 Difference]: With dead ends: 74 [2018-10-27 05:43:20,644 INFO L226 Difference]: Without dead ends: 72 [2018-10-27 05:43:20,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:20,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-27 05:43:20,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2018-10-27 05:43:20,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-27 05:43:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 91 transitions. [2018-10-27 05:43:20,657 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 91 transitions. Word has length 8 [2018-10-27 05:43:20,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:20,657 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 91 transitions. [2018-10-27 05:43:20,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:43:20,657 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 91 transitions. [2018-10-27 05:43:20,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-27 05:43:20,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:20,660 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:20,660 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:20,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:20,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1626993653, now seen corresponding path program 1 times [2018-10-27 05:43:20,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:20,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:20,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:20,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:20,662 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:20,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:20,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:43:20,742 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:20,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:43:20,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:43:20,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:20,743 INFO L87 Difference]: Start difference. First operand 66 states and 91 transitions. Second operand 3 states. [2018-10-27 05:43:20,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:20,896 INFO L93 Difference]: Finished difference Result 71 states and 97 transitions. [2018-10-27 05:43:20,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:43:20,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-10-27 05:43:20,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:20,898 INFO L225 Difference]: With dead ends: 71 [2018-10-27 05:43:20,898 INFO L226 Difference]: Without dead ends: 70 [2018-10-27 05:43:20,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:20,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-27 05:43:20,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2018-10-27 05:43:20,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-27 05:43:20,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 94 transitions. [2018-10-27 05:43:20,907 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 94 transitions. Word has length 19 [2018-10-27 05:43:20,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:20,907 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 94 transitions. [2018-10-27 05:43:20,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:43:20,908 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 94 transitions. [2018-10-27 05:43:20,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-27 05:43:20,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:20,909 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:20,909 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:20,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:20,909 INFO L82 PathProgramCache]: Analyzing trace with hash 923181581, now seen corresponding path program 1 times [2018-10-27 05:43:20,909 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:20,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:20,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:20,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:20,911 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:21,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:21,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:43:21,027 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:21,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:43:21,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:43:21,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:43:21,028 INFO L87 Difference]: Start difference. First operand 69 states and 94 transitions. Second operand 4 states. [2018-10-27 05:43:21,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:21,149 INFO L93 Difference]: Finished difference Result 81 states and 106 transitions. [2018-10-27 05:43:21,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:43:21,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-10-27 05:43:21,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:21,153 INFO L225 Difference]: With dead ends: 81 [2018-10-27 05:43:21,153 INFO L226 Difference]: Without dead ends: 80 [2018-10-27 05:43:21,153 INFO L605 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 [2018-10-27 05:43:21,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-27 05:43:21,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2018-10-27 05:43:21,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-27 05:43:21,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 91 transitions. [2018-10-27 05:43:21,164 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 91 transitions. Word has length 20 [2018-10-27 05:43:21,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:21,164 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 91 transitions. [2018-10-27 05:43:21,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:43:21,164 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 91 transitions. [2018-10-27 05:43:21,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-27 05:43:21,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:21,166 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:21,166 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:21,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:21,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1102804163, now seen corresponding path program 1 times [2018-10-27 05:43:21,166 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:21,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:21,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:21,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:21,168 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:21,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:21,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:43:21,215 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:21,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:43:21,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:43:21,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:43:21,216 INFO L87 Difference]: Start difference. First operand 66 states and 91 transitions. Second operand 4 states. [2018-10-27 05:43:21,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:21,281 INFO L93 Difference]: Finished difference Result 66 states and 91 transitions. [2018-10-27 05:43:21,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:43:21,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-10-27 05:43:21,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:21,283 INFO L225 Difference]: With dead ends: 66 [2018-10-27 05:43:21,283 INFO L226 Difference]: Without dead ends: 65 [2018-10-27 05:43:21,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:43:21,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-27 05:43:21,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-27 05:43:21,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-27 05:43:21,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2018-10-27 05:43:21,293 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 20 [2018-10-27 05:43:21,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:21,293 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 90 transitions. [2018-10-27 05:43:21,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:43:21,293 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions. [2018-10-27 05:43:21,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-27 05:43:21,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:21,295 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:21,295 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:21,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:21,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1445955111, now seen corresponding path program 1 times [2018-10-27 05:43:21,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:21,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:21,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:21,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:21,297 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:21,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:21,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:43:21,361 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:21,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:43:21,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:43:21,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:43:21,361 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. Second operand 4 states. [2018-10-27 05:43:21,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:21,525 INFO L93 Difference]: Finished difference Result 72 states and 97 transitions. [2018-10-27 05:43:21,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:43:21,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-27 05:43:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:21,527 INFO L225 Difference]: With dead ends: 72 [2018-10-27 05:43:21,528 INFO L226 Difference]: Without dead ends: 71 [2018-10-27 05:43:21,528 INFO L605 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 [2018-10-27 05:43:21,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-27 05:43:21,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2018-10-27 05:43:21,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-27 05:43:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2018-10-27 05:43:21,533 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 21 [2018-10-27 05:43:21,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:21,533 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2018-10-27 05:43:21,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:43:21,534 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2018-10-27 05:43:21,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-27 05:43:21,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:21,535 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:21,535 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:21,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:21,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1827018525, now seen corresponding path program 1 times [2018-10-27 05:43:21,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:21,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:21,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:21,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:21,537 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 05:43:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 05:43:21,579 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 05:43:21,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:43:21 BoogieIcfgContainer [2018-10-27 05:43:21,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:43:21,600 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 05:43:21,600 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 05:43:21,601 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 05:43:21,601 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:20" (3/4) ... [2018-10-27 05:43:21,603 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-27 05:43:21,640 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b6b9d8b2-f0b8-4cab-b804-ef437bdc82ab/bin-2019/utaipan/witness.graphml [2018-10-27 05:43:21,640 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 05:43:21,641 INFO L168 Benchmark]: Toolchain (without parser) took 2462.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -95.6 MB). Peak memory consumption was 55.9 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:21,642 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-10-27 05:43:21,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.73 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:21,643 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.85 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:43:21,643 INFO L168 Benchmark]: Boogie Preprocessor took 20.19 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:21,644 INFO L168 Benchmark]: RCFGBuilder took 672.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -187.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:21,644 INFO L168 Benchmark]: TraceAbstraction took 1516.07 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: 75.2 MB). Peak memory consumption was 75.2 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:21,645 INFO L168 Benchmark]: Witness Printer took 39.79 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:21,647 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 190.73 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 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 17.85 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.19 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 672.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -187.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1516.07 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: 75.2 MB). Peak memory consumption was 75.2 MB. Max. memory is 11.5 GB. * Witness Printer took 39.79 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 81]: integer overflow possible integer overflow possible We found a FailurePath: [L53] int d = 1; [L54] int x = __VERIFIER_nondet_int(); [L56] COND TRUE __VERIFIER_nondet_int() [L57] EXPR d - 1 [L57] d = d - 1 VAL [d=0, x=2147483647] [L61] COND FALSE !(__VERIFIER_nondet_int()) [L64] COND FALSE !(__VERIFIER_nondet_int()) [L67] COND FALSE !(__VERIFIER_nondet_int()) [L70] COND FALSE !(__VERIFIER_nondet_int()) [L76] COND TRUE __VERIFIER_nondet_int() [L77] EXPR d - 1 [L77] d = d - 1 VAL [d=-1, x=2147483647] [L80] COND TRUE x > 0 VAL [d=-1, x=2147483647] [L81] x - d VAL [d=-1, x=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 6 error locations. UNSAFE Result, 1.4s OverallTime, 7 OverallIterations, 1 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 347 SDtfs, 171 SDslu, 342 SDs, 0 SdLazy, 106 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=3, 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, 6 MinimizatonAttempts, 25 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 5025 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...