./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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c4ff5e02-eb94-48af-ae04-475330ade9f3/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c4ff5e02-eb94-48af-ae04-475330ade9f3/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c4ff5e02-eb94-48af-ae04-475330ade9f3/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c4ff5e02-eb94-48af-ae04-475330ade9f3/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_c4ff5e02-eb94-48af-ae04-475330ade9f3/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c4ff5e02-eb94-48af-ae04-475330ade9f3/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 0.1.23-5842f4b [2018-11-18 10:22:41,477 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:22:41,478 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:22:41,485 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:22:41,485 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:22:41,486 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:22:41,487 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:22:41,488 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:22:41,490 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:22:41,490 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:22:41,491 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:22:41,491 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:22:41,491 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:22:41,492 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:22:41,493 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:22:41,493 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:22:41,494 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:22:41,495 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:22:41,497 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:22:41,498 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:22:41,499 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:22:41,499 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:22:41,501 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:22:41,501 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:22:41,501 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:22:41,502 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:22:41,502 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:22:41,503 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:22:41,503 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:22:41,504 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:22:41,504 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:22:41,505 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:22:41,505 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:22:41,505 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:22:41,506 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:22:41,506 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:22:41,506 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c4ff5e02-eb94-48af-ae04-475330ade9f3/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-18 10:22:41,516 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:22:41,516 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:22:41,517 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:22:41,517 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 10:22:41,517 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 10:22:41,517 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 10:22:41,517 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 10:22:41,517 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 10:22:41,517 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 10:22:41,518 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 10:22:41,518 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 10:22:41,518 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 10:22:41,518 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 10:22:41,519 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:22:41,519 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 10:22:41,519 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:22:41,519 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:22:41,519 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:22:41,519 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:22:41,519 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:22:41,519 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 10:22:41,520 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:22:41,520 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:22:41,520 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:22:41,520 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:22:41,520 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:22:41,520 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:22:41,520 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:22:41,520 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:22:41,521 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:22:41,521 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:22:41,521 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:22:41,521 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 10:22:41,521 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:22:41,521 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:22:41,521 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 10:22:41,521 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_c4ff5e02-eb94-48af-ae04-475330ade9f3/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 [2018-11-18 10:22:41,544 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:22:41,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:22:41,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:22:41,558 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:22:41,558 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:22:41,559 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c4ff5e02-eb94-48af-ae04-475330ade9f3/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2_false-no-overflow.c [2018-11-18 10:22:41,604 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c4ff5e02-eb94-48af-ae04-475330ade9f3/bin-2019/utaipan/data/a7d84c517/94153a1fe0c14b7dad7b210dd0591168/FLAG36c328f34 [2018-11-18 10:22:41,993 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:22:41,993 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c4ff5e02-eb94-48af-ae04-475330ade9f3/sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2_false-no-overflow.c [2018-11-18 10:22:41,997 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c4ff5e02-eb94-48af-ae04-475330ade9f3/bin-2019/utaipan/data/a7d84c517/94153a1fe0c14b7dad7b210dd0591168/FLAG36c328f34 [2018-11-18 10:22:42,005 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c4ff5e02-eb94-48af-ae04-475330ade9f3/bin-2019/utaipan/data/a7d84c517/94153a1fe0c14b7dad7b210dd0591168 [2018-11-18 10:22:42,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:22:42,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 10:22:42,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:22:42,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:22:42,010 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:22:42,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:22:42" (1/1) ... [2018-11-18 10:22:42,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c0c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:42, skipping insertion in model container [2018-11-18 10:22:42,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:22:42" (1/1) ... [2018-11-18 10:22:42,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:22:42,030 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:22:42,138 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:22:42,141 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:22:42,152 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:22:42,161 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:22:42,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:42 WrapperNode [2018-11-18 10:22:42,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:22:42,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 10:22:42,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 10:22:42,162 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 10:22:42,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:42" (1/1) ... [2018-11-18 10:22:42,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:42" (1/1) ... [2018-11-18 10:22:42,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 10:22:42,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:22:42,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:22:42,175 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:22:42,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:42" (1/1) ... [2018-11-18 10:22:42,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:42" (1/1) ... [2018-11-18 10:22:42,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:42" (1/1) ... [2018-11-18 10:22:42,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:42" (1/1) ... [2018-11-18 10:22:42,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:42" (1/1) ... [2018-11-18 10:22:42,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:42" (1/1) ... [2018-11-18 10:22:42,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:42" (1/1) ... [2018-11-18 10:22:42,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:22:42,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:22:42,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:22:42,193 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:22:42,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c4ff5e02-eb94-48af-ae04-475330ade9f3/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:22:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:22:42,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:22:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-11-18 10:22:42,272 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-11-18 10:22:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:22:42,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:22:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:22:42,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:22:42,445 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:22:42,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:22:42 BoogieIcfgContainer [2018-11-18 10:22:42,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:22:42,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:22:42,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:22:42,448 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:22:42,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:22:42" (1/3) ... [2018-11-18 10:22:42,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51286ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:22:42, skipping insertion in model container [2018-11-18 10:22:42,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:42" (2/3) ... [2018-11-18 10:22:42,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51286ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:22:42, skipping insertion in model container [2018-11-18 10:22:42,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:22:42" (3/3) ... [2018-11-18 10:22:42,450 INFO L112 eAbstractionObserver]: Analyzing ICFG HarrisLalNoriRajamani-SAS2010-Fig2_false-no-overflow.c [2018-11-18 10:22:42,455 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:22:42,460 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-18 10:22:42,472 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-18 10:22:42,498 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:22:42,498 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:22:42,498 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:22:42,499 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:22:42,499 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:22:42,499 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:22:42,499 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:22:42,499 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:22:42,510 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-11-18 10:22:42,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-18 10:22:42,513 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:22:42,513 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:22:42,515 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 10:22:42,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:22:42,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1533557337, now seen corresponding path program 1 times [2018-11-18 10:22:42,519 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:22:42,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:22:42,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:22:42,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:22:42,555 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:22:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:22:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:22:42,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:22:42,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 10:22:42,615 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 10:22:42,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 10:22:42,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 10:22:42,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 10:22:42,628 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2018-11-18 10:22:42,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:22:42,667 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2018-11-18 10:22:42,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 10:22:42,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-18 10:22:42,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:22:42,674 INFO L225 Difference]: With dead ends: 59 [2018-11-18 10:22:42,675 INFO L226 Difference]: Without dead ends: 47 [2018-11-18 10:22:42,677 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 10:22:42,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-18 10:22:42,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-11-18 10:22:42,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-18 10:22:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2018-11-18 10:22:42,704 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 7 [2018-11-18 10:22:42,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:22:42,704 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2018-11-18 10:22:42,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 10:22:42,705 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2018-11-18 10:22:42,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-18 10:22:42,705 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:22:42,705 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:22:42,705 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 10:22:42,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:22:42,706 INFO L82 PathProgramCache]: Analyzing trace with hash -295637108, now seen corresponding path program 1 times [2018-11-18 10:22:42,706 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:22:42,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:22:42,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:22:42,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:22:42,707 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:22:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:22:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:22:42,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:22:42,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 10:22:42,737 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 10:22:42,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 10:22:42,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 10:22:42,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 10:22:42,738 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand 3 states. [2018-11-18 10:22:42,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:22:42,779 INFO L93 Difference]: Finished difference Result 74 states and 99 transitions. [2018-11-18 10:22:42,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 10:22:42,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-18 10:22:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:22:42,781 INFO L225 Difference]: With dead ends: 74 [2018-11-18 10:22:42,781 INFO L226 Difference]: Without dead ends: 72 [2018-11-18 10:22:42,782 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 10:22:42,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-18 10:22:42,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2018-11-18 10:22:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-11-18 10:22:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 91 transitions. [2018-11-18 10:22:42,791 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 91 transitions. Word has length 8 [2018-11-18 10:22:42,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:22:42,791 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 91 transitions. [2018-11-18 10:22:42,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 10:22:42,791 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 91 transitions. [2018-11-18 10:22:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 10:22:42,792 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:22:42,792 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:22:42,792 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 10:22:42,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:22:42,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1626993653, now seen corresponding path program 1 times [2018-11-18 10:22:42,793 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:22:42,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:22:42,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:22:42,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:22:42,793 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:22:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:22:42,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:22:42,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:22:42,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 10:22:42,820 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 10:22:42,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 10:22:42,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 10:22:42,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 10:22:42,821 INFO L87 Difference]: Start difference. First operand 66 states and 91 transitions. Second operand 3 states. [2018-11-18 10:22:42,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:22:42,865 INFO L93 Difference]: Finished difference Result 71 states and 97 transitions. [2018-11-18 10:22:42,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 10:22:42,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-18 10:22:42,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:22:42,866 INFO L225 Difference]: With dead ends: 71 [2018-11-18 10:22:42,866 INFO L226 Difference]: Without dead ends: 70 [2018-11-18 10:22:42,867 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 10:22:42,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-18 10:22:42,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2018-11-18 10:22:42,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-18 10:22:42,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 94 transitions. [2018-11-18 10:22:42,873 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 94 transitions. Word has length 19 [2018-11-18 10:22:42,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:22:42,873 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 94 transitions. [2018-11-18 10:22:42,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 10:22:42,873 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 94 transitions. [2018-11-18 10:22:42,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 10:22:42,874 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:22:42,874 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] [2018-11-18 10:22:42,875 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 10:22:42,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:22:42,875 INFO L82 PathProgramCache]: Analyzing trace with hash 923181581, now seen corresponding path program 1 times [2018-11-18 10:22:42,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:22:42,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:22:42,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:22:42,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:22:42,876 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:22:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:22:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:22:42,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:22:42,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 10:22:42,908 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 10:22:42,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 10:22:42,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:22:42,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:22:42,909 INFO L87 Difference]: Start difference. First operand 69 states and 94 transitions. Second operand 4 states. [2018-11-18 10:22:42,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:22:42,962 INFO L93 Difference]: Finished difference Result 81 states and 106 transitions. [2018-11-18 10:22:42,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 10:22:42,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-18 10:22:42,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:22:42,963 INFO L225 Difference]: With dead ends: 81 [2018-11-18 10:22:42,963 INFO L226 Difference]: Without dead ends: 80 [2018-11-18 10:22:42,964 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:22:42,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-11-18 10:22:42,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2018-11-18 10:22:42,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-11-18 10:22:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 91 transitions. [2018-11-18 10:22:42,971 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 91 transitions. Word has length 20 [2018-11-18 10:22:42,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:22:42,971 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 91 transitions. [2018-11-18 10:22:42,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 10:22:42,972 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 91 transitions. [2018-11-18 10:22:42,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 10:22:42,973 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:22:42,973 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] [2018-11-18 10:22:42,973 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 10:22:42,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:22:42,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1102804163, now seen corresponding path program 1 times [2018-11-18 10:22:42,974 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:22:42,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:22:42,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:22:42,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:22:42,974 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:22:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:22:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:22:42,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:22:42,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 10:22:42,998 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 10:22:42,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 10:22:42,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:22:42,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:22:42,999 INFO L87 Difference]: Start difference. First operand 66 states and 91 transitions. Second operand 4 states. [2018-11-18 10:22:43,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:22:43,045 INFO L93 Difference]: Finished difference Result 66 states and 91 transitions. [2018-11-18 10:22:43,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 10:22:43,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-18 10:22:43,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:22:43,046 INFO L225 Difference]: With dead ends: 66 [2018-11-18 10:22:43,046 INFO L226 Difference]: Without dead ends: 65 [2018-11-18 10:22:43,046 INFO L604 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 [2018-11-18 10:22:43,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-18 10:22:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-11-18 10:22:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-18 10:22:43,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2018-11-18 10:22:43,052 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 20 [2018-11-18 10:22:43,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:22:43,052 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 90 transitions. [2018-11-18 10:22:43,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 10:22:43,052 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions. [2018-11-18 10:22:43,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 10:22:43,053 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:22:43,053 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] [2018-11-18 10:22:43,053 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 10:22:43,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:22:43,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1445955111, now seen corresponding path program 1 times [2018-11-18 10:22:43,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:22:43,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:22:43,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:22:43,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:22:43,054 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:22:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:22:43,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:22:43,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:22:43,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 10:22:43,082 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 10:22:43,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 10:22:43,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:22:43,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:22:43,083 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. Second operand 4 states. [2018-11-18 10:22:43,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:22:43,118 INFO L93 Difference]: Finished difference Result 72 states and 97 transitions. [2018-11-18 10:22:43,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 10:22:43,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-11-18 10:22:43,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:22:43,119 INFO L225 Difference]: With dead ends: 72 [2018-11-18 10:22:43,119 INFO L226 Difference]: Without dead ends: 71 [2018-11-18 10:22:43,119 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:22:43,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-18 10:22:43,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2018-11-18 10:22:43,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-18 10:22:43,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2018-11-18 10:22:43,124 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 21 [2018-11-18 10:22:43,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:22:43,124 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2018-11-18 10:22:43,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 10:22:43,124 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2018-11-18 10:22:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 10:22:43,125 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:22:43,125 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] [2018-11-18 10:22:43,126 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 10:22:43,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:22:43,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1827018525, now seen corresponding path program 1 times [2018-11-18 10:22:43,126 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:22:43,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:22:43,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:22:43,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:22:43,127 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:22:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:22:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:22:43,148 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 10:22:43,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:22:43 BoogieIcfgContainer [2018-11-18 10:22:43,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:22:43,170 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:22:43,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:22:43,170 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:22:43,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:22:42" (3/4) ... [2018-11-18 10:22:43,172 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 10:22:43,197 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c4ff5e02-eb94-48af-ae04-475330ade9f3/bin-2019/utaipan/witness.graphml [2018-11-18 10:22:43,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:22:43,198 INFO L168 Benchmark]: Toolchain (without parser) took 1190.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 958.2 MB in the beginning and 1.0 GB in the end (delta: -82.1 MB). Peak memory consumption was 62.0 MB. Max. memory is 11.5 GB. [2018-11-18 10:22:43,198 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:22:43,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.31 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:22:43,199 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.68 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:22:43,199 INFO L168 Benchmark]: Boogie Preprocessor took 18.22 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:22:43,199 INFO L168 Benchmark]: RCFGBuilder took 252.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 10:22:43,200 INFO L168 Benchmark]: TraceAbstraction took 723.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 79.7 MB). Peak memory consumption was 79.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:22:43,201 INFO L168 Benchmark]: Witness Printer took 27.07 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:22:43,203 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 153.31 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.68 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.22 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 252.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 723.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 79.7 MB). Peak memory consumption was 79.7 MB. Max. memory is 11.5 GB. * Witness Printer took 27.07 ms. Allocated memory is still 1.2 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: 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, 0.6s OverallTime, 7 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 347 SDtfs, 171 SDslu, 342 SDs, 0 SdLazy, 106 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 0.1s 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...