./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ce21207c-dee8-4b72-8397-bde64ecdb2a4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ce21207c-dee8-4b72-8397-bde64ecdb2a4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ce21207c-dee8-4b72-8397-bde64ecdb2a4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ce21207c-dee8-4b72-8397-bde64ecdb2a4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ce21207c-dee8-4b72-8397-bde64ecdb2a4/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ce21207c-dee8-4b72-8397-bde64ecdb2a4/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 f560e32afd5a40adf4a98abbf810cb377947c4f4 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:16:32,797 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:16:32,797 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:16:32,803 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:16:32,804 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:16:32,804 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:16:32,805 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:16:32,806 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:16:32,806 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:16:32,807 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:16:32,807 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:16:32,807 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:16:32,808 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:16:32,808 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:16:32,809 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:16:32,809 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:16:32,809 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:16:32,810 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:16:32,811 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:16:32,812 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:16:32,813 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:16:32,813 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:16:32,814 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:16:32,814 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:16:32,815 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:16:32,815 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:16:32,816 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:16:32,816 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:16:32,816 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:16:32,817 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:16:32,817 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:16:32,817 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:16:32,818 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:16:32,818 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:16:32,818 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:16:32,819 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:16:32,819 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ce21207c-dee8-4b72-8397-bde64ecdb2a4/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-12-09 19:16:32,826 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:16:32,826 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:16:32,827 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:16:32,827 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:16:32,827 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:16:32,827 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:16:32,827 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:16:32,827 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 19:16:32,827 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:16:32,827 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:16:32,827 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 19:16:32,828 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 19:16:32,828 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:16:32,828 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:16:32,828 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 19:16:32,828 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 19:16:32,828 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:16:32,828 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:16:32,828 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:16:32,828 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:16:32,828 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-09 19:16:32,829 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:16:32,829 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:16:32,829 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:16:32,829 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:16:32,829 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:16:32,829 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:16:32,829 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:16:32,829 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:16:32,829 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:16:32,829 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:16:32,829 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 19:16:32,829 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:16:32,830 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 19:16:32,830 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 19:16:32,830 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_ce21207c-dee8-4b72-8397-bde64ecdb2a4/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 -> f560e32afd5a40adf4a98abbf810cb377947c4f4 [2018-12-09 19:16:32,847 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:16:32,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:16:32,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:16:32,856 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:16:32,856 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:16:32,856 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ce21207c-dee8-4b72-8397-bde64ecdb2a4/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4_true-termination_true-no-overflow.c [2018-12-09 19:16:32,888 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ce21207c-dee8-4b72-8397-bde64ecdb2a4/bin-2019/utaipan/data/8ca5f6e0a/65cfca1b35c443868f90582be583d18e/FLAGd93b924bd [2018-12-09 19:16:33,354 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:16:33,354 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ce21207c-dee8-4b72-8397-bde64ecdb2a4/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4_true-termination_true-no-overflow.c [2018-12-09 19:16:33,358 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ce21207c-dee8-4b72-8397-bde64ecdb2a4/bin-2019/utaipan/data/8ca5f6e0a/65cfca1b35c443868f90582be583d18e/FLAGd93b924bd [2018-12-09 19:16:33,367 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ce21207c-dee8-4b72-8397-bde64ecdb2a4/bin-2019/utaipan/data/8ca5f6e0a/65cfca1b35c443868f90582be583d18e [2018-12-09 19:16:33,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:16:33,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:16:33,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:16:33,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:16:33,372 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:16:33,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:16:33" (1/1) ... [2018-12-09 19:16:33,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3033e242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:16:33, skipping insertion in model container [2018-12-09 19:16:33,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:16:33" (1/1) ... [2018-12-09 19:16:33,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:16:33,393 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:16:33,477 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:16:33,479 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:16:33,487 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:16:33,495 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:16:33,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:16:33 WrapperNode [2018-12-09 19:16:33,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:16:33,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:16:33,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:16:33,496 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:16:33,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:16:33" (1/1) ... [2018-12-09 19:16:33,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:16:33" (1/1) ... [2018-12-09 19:16:33,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:16:33,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:16:33,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:16:33,508 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:16:33,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:16:33" (1/1) ... [2018-12-09 19:16:33,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:16:33" (1/1) ... [2018-12-09 19:16:33,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:16:33" (1/1) ... [2018-12-09 19:16:33,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:16:33" (1/1) ... [2018-12-09 19:16:33,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:16:33" (1/1) ... [2018-12-09 19:16:33,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:16:33" (1/1) ... [2018-12-09 19:16:33,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:16:33" (1/1) ... [2018-12-09 19:16:33,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:16:33,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:16:33,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:16:33,520 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:16:33,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:16:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce21207c-dee8-4b72-8397-bde64ecdb2a4/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:16:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 19:16:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 19:16:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:16:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:16:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 19:16:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 19:16:33,662 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:16:33,663 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 19:16:33,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:16:33 BoogieIcfgContainer [2018-12-09 19:16:33,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:16:33,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:16:33,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:16:33,665 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:16:33,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:16:33" (1/3) ... [2018-12-09 19:16:33,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d309261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:16:33, skipping insertion in model container [2018-12-09 19:16:33,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:16:33" (2/3) ... [2018-12-09 19:16:33,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d309261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:16:33, skipping insertion in model container [2018-12-09 19:16:33,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:16:33" (3/3) ... [2018-12-09 19:16:33,667 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi4_true-termination_true-no-overflow.c [2018-12-09 19:16:33,673 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:16:33,677 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-09 19:16:33,687 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-09 19:16:33,705 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:16:33,705 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:16:33,705 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:16:33,705 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:16:33,705 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:16:33,706 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:16:33,706 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:16:33,706 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:16:33,716 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-12-09 19:16:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 19:16:33,719 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:16:33,720 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:16:33,721 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 19:16:33,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:16:33,725 INFO L82 PathProgramCache]: Analyzing trace with hash 350361843, now seen corresponding path program 1 times [2018-12-09 19:16:33,726 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:16:33,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:16:33,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:16:33,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:16:33,759 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:16:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:16:33,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:16:33,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:16:33,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:16:33,816 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:16:33,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 19:16:33,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 19:16:33,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 19:16:33,828 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2018-12-09 19:16:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:16:33,902 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2018-12-09 19:16:33,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 19:16:33,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-12-09 19:16:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:16:33,912 INFO L225 Difference]: With dead ends: 34 [2018-12-09 19:16:33,912 INFO L226 Difference]: Without dead ends: 20 [2018-12-09 19:16:33,914 INFO L631 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 [2018-12-09 19:16:33,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-12-09 19:16:33,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2018-12-09 19:16:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-09 19:16:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-12-09 19:16:33,933 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 9 [2018-12-09 19:16:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:16:33,934 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-12-09 19:16:33,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 19:16:33,934 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-12-09 19:16:33,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 19:16:33,934 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:16:33,934 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:16:33,935 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 19:16:33,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:16:33,935 INFO L82 PathProgramCache]: Analyzing trace with hash 350362035, now seen corresponding path program 1 times [2018-12-09 19:16:33,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:16:33,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:16:33,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:16:33,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:16:33,937 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:16:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:16:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:16:33,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:16:33,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:16:33,970 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:16:33,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 19:16:33,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 19:16:33,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 19:16:33,971 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2018-12-09 19:16:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:16:34,001 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2018-12-09 19:16:34,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 19:16:34,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-12-09 19:16:34,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:16:34,002 INFO L225 Difference]: With dead ends: 20 [2018-12-09 19:16:34,002 INFO L226 Difference]: Without dead ends: 19 [2018-12-09 19:16:34,003 INFO L631 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 [2018-12-09 19:16:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-12-09 19:16:34,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2018-12-09 19:16:34,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-09 19:16:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-12-09 19:16:34,007 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2018-12-09 19:16:34,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:16:34,007 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-12-09 19:16:34,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 19:16:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-12-09 19:16:34,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 19:16:34,008 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:16:34,008 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:16:34,008 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 19:16:34,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:16:34,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2023684702, now seen corresponding path program 1 times [2018-12-09 19:16:34,009 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:16:34,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:16:34,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:16:34,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:16:34,010 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:16:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:16:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:16:34,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:16:34,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 19:16:34,026 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:16:34,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 19:16:34,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 19:16:34,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:16:34,027 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2018-12-09 19:16:34,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:16:34,043 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-12-09 19:16:34,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 19:16:34,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 19:16:34,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:16:34,044 INFO L225 Difference]: With dead ends: 19 [2018-12-09 19:16:34,044 INFO L226 Difference]: Without dead ends: 18 [2018-12-09 19:16:34,044 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:16:34,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-09 19:16:34,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-12-09 19:16:34,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-09 19:16:34,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-12-09 19:16:34,047 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2018-12-09 19:16:34,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:16:34,047 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-12-09 19:16:34,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 19:16:34,047 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-12-09 19:16:34,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 19:16:34,048 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:16:34,048 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:16:34,048 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 19:16:34,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:16:34,048 INFO L82 PathProgramCache]: Analyzing trace with hash -2023678744, now seen corresponding path program 1 times [2018-12-09 19:16:34,048 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:16:34,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:16:34,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:16:34,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:16:34,050 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:16:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:16:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:16:34,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:16:34,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 19:16:34,064 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:16:34,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 19:16:34,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 19:16:34,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:16:34,065 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2018-12-09 19:16:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:16:34,082 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2018-12-09 19:16:34,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 19:16:34,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 19:16:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:16:34,083 INFO L225 Difference]: With dead ends: 29 [2018-12-09 19:16:34,083 INFO L226 Difference]: Without dead ends: 18 [2018-12-09 19:16:34,083 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:16:34,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-09 19:16:34,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-09 19:16:34,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-09 19:16:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-12-09 19:16:34,085 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2018-12-09 19:16:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:16:34,086 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-12-09 19:16:34,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 19:16:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-12-09 19:16:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 19:16:34,086 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:16:34,086 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:16:34,086 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 19:16:34,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:16:34,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1042517416, now seen corresponding path program 1 times [2018-12-09 19:16:34,086 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:16:34,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:16:34,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:16:34,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:16:34,087 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:16:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:16:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:16:34,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:16:34,111 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 19:16:34,112 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-12-09 19:16:34,113 INFO L205 CegarAbsIntRunner]: [0], [4], [7], [16], [25], [26], [27], [29], [39], [40], [41] [2018-12-09 19:16:34,134 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 19:16:34,135 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 19:16:34,195 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 19:16:34,196 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Performed 30 root evaluator evaluations with a maximum evaluation depth of 3. Performed 30 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-12-09 19:16:34,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:16:34,201 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 19:16:34,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:16:34,201 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce21207c-dee8-4b72-8397-bde64ecdb2a4/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:16:34,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:16:34,208 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 19:16:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:16:34,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:16:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:16:34,249 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:16:34,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:16:34,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-09 19:16:34,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 10 [2018-12-09 19:16:34,307 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:16:34,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 19:16:34,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 19:16:34,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-12-09 19:16:34,307 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2018-12-09 19:16:34,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:16:34,332 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-12-09 19:16:34,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 19:16:34,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-09 19:16:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:16:34,333 INFO L225 Difference]: With dead ends: 20 [2018-12-09 19:16:34,333 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 19:16:34,333 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-12-09 19:16:34,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 19:16:34,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 19:16:34,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 19:16:34,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 19:16:34,334 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-12-09 19:16:34,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:16:34,334 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 19:16:34,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 19:16:34,334 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 19:16:34,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 19:16:34,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 19:16:34,381 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 19:16:34,382 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 19:16:34,382 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 19:16:34,382 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 19:16:34,382 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 19:16:34,382 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 19:16:34,382 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 13 28) no Hoare annotation was computed. [2018-12-09 19:16:34,382 INFO L448 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-12-09 19:16:34,382 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-12-09 19:16:34,382 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-12-09 19:16:34,382 INFO L448 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-12-09 19:16:34,382 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2018-12-09 19:16:34,382 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 26) no Hoare annotation was computed. [2018-12-09 19:16:34,382 INFO L448 ceAbstractionStarter]: For program point L17-1(lines 17 26) no Hoare annotation was computed. [2018-12-09 19:16:34,382 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 13 28) no Hoare annotation was computed. [2018-12-09 19:16:34,382 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-12-09 19:16:34,383 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 13 28) the Hoare annotation is: true [2018-12-09 19:16:34,383 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2018-12-09 19:16:34,383 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2018-12-09 19:16:34,383 INFO L444 ceAbstractionStarter]: At program point L20-2(lines 19 25) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 2147483647)) (.cse1 (< 0 main_~m~0))) (or (and .cse0 .cse1 (<= main_~m~0 2147483647) (<= (+ main_~i~0 main_~m~0) 2147483647)) (and (<= main_~i~0 2147483647) .cse0 (<= main_~m~0 main_~i~0) .cse1))) [2018-12-09 19:16:34,383 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-12-09 19:16:34,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:16:34 BoogieIcfgContainer [2018-12-09 19:16:34,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:16:34,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:16:34,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:16:34,391 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:16:34,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:16:33" (3/4) ... [2018-12-09 19:16:34,393 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 19:16:34,396 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 19:16:34,396 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 19:16:34,398 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-12-09 19:16:34,398 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 19:16:34,398 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 19:16:34,422 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ce21207c-dee8-4b72-8397-bde64ecdb2a4/bin-2019/utaipan/witness.graphml [2018-12-09 19:16:34,422 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:16:34,422 INFO L168 Benchmark]: Toolchain (without parser) took 1053.39 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 959.8 MB in the beginning and 993.0 MB in the end (delta: -33.2 MB). Peak memory consumption was 78.5 MB. Max. memory is 11.5 GB. [2018-12-09 19:16:34,423 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:16:34,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 125.45 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:16:34,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.72 ms. Allocated memory is still 1.0 GB. Free memory is still 949.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:16:34,423 INFO L168 Benchmark]: Boogie Preprocessor took 12.10 ms. Allocated memory is still 1.0 GB. Free memory is still 949.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:16:34,424 INFO L168 Benchmark]: RCFGBuilder took 143.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 949.0 MB in the beginning and 1.1 GB in the end (delta: -149.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-12-09 19:16:34,424 INFO L168 Benchmark]: TraceAbstraction took 726.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 995.7 MB in the end (delta: 102.3 MB). Peak memory consumption was 102.3 MB. Max. memory is 11.5 GB. [2018-12-09 19:16:34,424 INFO L168 Benchmark]: Witness Printer took 31.31 ms. Allocated memory is still 1.1 GB. Free memory was 995.7 MB in the beginning and 993.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:16:34,426 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 125.45 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.0 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 11.72 ms. Allocated memory is still 1.0 GB. Free memory is still 949.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.10 ms. Allocated memory is still 1.0 GB. Free memory is still 949.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 143.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 949.0 MB in the beginning and 1.1 GB in the end (delta: -149.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 726.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 995.7 MB in the end (delta: 102.3 MB). Peak memory consumption was 102.3 MB. Max. memory is 11.5 GB. * Witness Printer took 31.31 ms. Allocated memory is still 1.1 GB. Free memory was 995.7 MB in the beginning and 993.0 MB 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: - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((n <= 2147483647 && 0 < m) && m <= 2147483647) && i + m <= 2147483647) || (((i <= 2147483647 && n <= 2147483647) && m <= i) && 0 < m) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 4 error locations. SAFE Result, 0.6s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 57 SDslu, 40 SDs, 0 SdLazy, 84 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 33 HoareAnnotationTreeSize, 5 FomulaSimplifications, 99 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 1 QuantifiedInterpolants, 2440 SizeOfPredicates, 3 NumberOfNonLiveVariables, 31 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 3/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...