./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/bin/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 e334e85dd18553afecc96b27cf49a003304cbca8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 12:34:13,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:34:13,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:34:13,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:34:13,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:34:13,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:34:13,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:34:13,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:34:13,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:34:13,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:34:13,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:34:13,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:34:13,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:34:13,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:34:13,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:34:13,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:34:13,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:34:13,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:34:13,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:34:13,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:34:13,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:34:13,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:34:13,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:34:13,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:34:13,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:34:13,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:34:13,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:34:13,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:34:13,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:34:13,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:34:13,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:34:13,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:34:13,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:34:13,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:34:13,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:34:13,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:34:13,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:34:13,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:34:13,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:34:13,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:34:13,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:34:13,342 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-12-07 12:34:13,352 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:34:13,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:34:13,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 12:34:13,353 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 12:34:13,353 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 12:34:13,353 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 12:34:13,353 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 12:34:13,353 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 12:34:13,354 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 12:34:13,354 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 12:34:13,354 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 12:34:13,354 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 12:34:13,354 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 12:34:13,354 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 12:34:13,354 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 12:34:13,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:34:13,355 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 12:34:13,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:34:13,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:34:13,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:34:13,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:34:13,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:34:13,356 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 12:34:13,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:34:13,356 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:34:13,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:34:13,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:34:13,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:34:13,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:34:13,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:34:13,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:34:13,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:34:13,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:34:13,357 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 12:34:13,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:34:13,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:34:13,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:34:13,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 12:34:13,358 INFO L138 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/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/bin/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 -> e334e85dd18553afecc96b27cf49a003304cbca8 [2019-12-07 12:34:13,457 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:34:13,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:34:13,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:34:13,472 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:34:13,472 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:34:13,473 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-12-07 12:34:13,521 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/bin/utaipan/data/2c5f7267a/82537676b68b496b8bcad5e952ca2737/FLAG68e92905b [2019-12-07 12:34:13,917 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:34:13,918 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-12-07 12:34:13,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/bin/utaipan/data/2c5f7267a/82537676b68b496b8bcad5e952ca2737/FLAG68e92905b [2019-12-07 12:34:13,929 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/bin/utaipan/data/2c5f7267a/82537676b68b496b8bcad5e952ca2737 [2019-12-07 12:34:13,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:34:13,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:34:13,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:34:13,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:34:13,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:34:13,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:34:13" (1/1) ... [2019-12-07 12:34:13,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4186404e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:13, skipping insertion in model container [2019-12-07 12:34:13,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:34:13" (1/1) ... [2019-12-07 12:34:13,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:34:13,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:34:14,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:34:14,050 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:34:14,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:34:14,102 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:34:14,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:14 WrapperNode [2019-12-07 12:34:14,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:34:14,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:34:14,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:34:14,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:34:14,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:14" (1/1) ... [2019-12-07 12:34:14,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:14" (1/1) ... [2019-12-07 12:34:14,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:34:14,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:34:14,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:34:14,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:34:14,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:14" (1/1) ... [2019-12-07 12:34:14,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:14" (1/1) ... [2019-12-07 12:34:14,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:14" (1/1) ... [2019-12-07 12:34:14,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:14" (1/1) ... [2019-12-07 12:34:14,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:14" (1/1) ... [2019-12-07 12:34:14,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:14" (1/1) ... [2019-12-07 12:34:14,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:14" (1/1) ... [2019-12-07 12:34:14,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:34:14,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:34:14,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:34:14,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:34:14,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/bin/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 [2019-12-07 12:34:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:34:14,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:34:14,291 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:34:14,291 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 12:34:14,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:34:14 BoogieIcfgContainer [2019-12-07 12:34:14,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:34:14,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:34:14,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:34:14,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:34:14,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:34:13" (1/3) ... [2019-12-07 12:34:14,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ec5725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:34:14, skipping insertion in model container [2019-12-07 12:34:14,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:14" (2/3) ... [2019-12-07 12:34:14,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ec5725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:34:14, skipping insertion in model container [2019-12-07 12:34:14,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:34:14" (3/3) ... [2019-12-07 12:34:14,297 INFO L109 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-12-07 12:34:14,303 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:34:14,307 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 12:34:14,315 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 12:34:14,329 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:34:14,329 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:34:14,329 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:34:14,329 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:34:14,329 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:34:14,329 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:34:14,329 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:34:14,329 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:34:14,338 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-12-07 12:34:14,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 12:34:14,342 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:34:14,342 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 12:34:14,343 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 12:34:14,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:34:14,346 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2019-12-07 12:34:14,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:34:14,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453948774] [2019-12-07 12:34:14,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:34:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:34:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:34:14,445 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453948774] [2019-12-07 12:34:14,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:34:14,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:34:14,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720157083] [2019-12-07 12:34:14,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:34:14,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:34:14,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:34:14,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:34:14,459 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-12-07 12:34:14,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:34:14,487 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2019-12-07 12:34:14,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:34:14,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-07 12:34:14,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:34:14,495 INFO L225 Difference]: With dead ends: 21 [2019-12-07 12:34:14,495 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 12:34:14,497 INFO L630 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 [2019-12-07 12:34:14,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 12:34:14,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-12-07 12:34:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 12:34:14,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-12-07 12:34:14,518 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 5 [2019-12-07 12:34:14,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:34:14,518 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-07 12:34:14,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:34:14,519 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-12-07 12:34:14,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 12:34:14,519 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:34:14,519 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 12:34:14,519 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 12:34:14,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:34:14,519 INFO L82 PathProgramCache]: Analyzing trace with hash 920230152, now seen corresponding path program 1 times [2019-12-07 12:34:14,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:34:14,520 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431754237] [2019-12-07 12:34:14,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:34:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:34:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:34:14,536 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431754237] [2019-12-07 12:34:14,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:34:14,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:34:14,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988317198] [2019-12-07 12:34:14,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:34:14,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:34:14,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:34:14,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:34:14,537 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2019-12-07 12:34:14,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:34:14,549 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-12-07 12:34:14,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:34:14,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 12:34:14,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:34:14,550 INFO L225 Difference]: With dead ends: 15 [2019-12-07 12:34:14,550 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 12:34:14,551 INFO L630 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 [2019-12-07 12:34:14,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 12:34:14,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 12:34:14,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 12:34:14,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-12-07 12:34:14,553 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2019-12-07 12:34:14,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:34:14,553 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-12-07 12:34:14,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:34:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-12-07 12:34:14,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 12:34:14,554 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:34:14,554 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:34:14,554 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 12:34:14,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:34:14,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1537636308, now seen corresponding path program 1 times [2019-12-07 12:34:14,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:34:14,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83918297] [2019-12-07 12:34:14,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:34:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:34:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:34:14,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83918297] [2019-12-07 12:34:14,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:34:14,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:34:14,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925529158] [2019-12-07 12:34:14,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 12:34:14,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:34:14,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:34:14,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:34:14,581 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2019-12-07 12:34:14,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:34:14,600 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-12-07 12:34:14,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:34:14,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-12-07 12:34:14,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:34:14,600 INFO L225 Difference]: With dead ends: 14 [2019-12-07 12:34:14,600 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 12:34:14,601 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:34:14,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 12:34:14,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-12-07 12:34:14,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 12:34:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-12-07 12:34:14,603 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2019-12-07 12:34:14,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:34:14,603 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-12-07 12:34:14,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 12:34:14,603 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-12-07 12:34:14,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 12:34:14,604 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:34:14,604 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:34:14,604 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 12:34:14,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:34:14,604 INFO L82 PathProgramCache]: Analyzing trace with hash -422085238, now seen corresponding path program 1 times [2019-12-07 12:34:14,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:34:14,605 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148472051] [2019-12-07 12:34:14,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:34:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:34:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:34:14,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148472051] [2019-12-07 12:34:14,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:34:14,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:34:14,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446466042] [2019-12-07 12:34:14,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:34:14,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:34:14,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:34:14,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:34:14,621 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2019-12-07 12:34:14,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:34:14,628 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-12-07 12:34:14,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:34:14,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 12:34:14,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:34:14,629 INFO L225 Difference]: With dead ends: 14 [2019-12-07 12:34:14,629 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 12:34:14,630 INFO L630 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 [2019-12-07 12:34:14,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 12:34:14,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-12-07 12:34:14,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 12:34:14,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-12-07 12:34:14,632 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2019-12-07 12:34:14,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:34:14,632 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-12-07 12:34:14,632 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:34:14,633 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-12-07 12:34:14,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 12:34:14,633 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:34:14,633 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:34:14,633 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 12:34:14,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:34:14,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1322960227, now seen corresponding path program 1 times [2019-12-07 12:34:14,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:34:14,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649276160] [2019-12-07 12:34:14,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:34:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:34:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:34:14,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649276160] [2019-12-07 12:34:14,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036590193] [2019-12-07 12:34:14,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:34:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:34:14,677 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 12:34:14,680 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:34:14,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:34:14,693 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:34:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:34:14,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [991654412] [2019-12-07 12:34:14,725 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 12:34:14,725 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:34:14,729 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 12:34:14,733 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 12:34:14,734 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 12:34:14,869 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 12:34:15,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:34:15,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 10 [2019-12-07 12:34:15,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382491975] [2019-12-07 12:34:15,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 12:34:15,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:34:15,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 12:34:15,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-12-07 12:34:15,005 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 7 states. [2019-12-07 12:34:15,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:34:15,027 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-12-07 12:34:15,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 12:34:15,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-12-07 12:34:15,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:34:15,028 INFO L225 Difference]: With dead ends: 13 [2019-12-07 12:34:15,028 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 12:34:15,028 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-12-07 12:34:15,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 12:34:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 12:34:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 12:34:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 12:34:15,029 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 12:34:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:34:15,029 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:34:15,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 12:34:15,029 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 12:34:15,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 12:34:15,230 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:34:15,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 12:34:15,320 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-12-07 12:34:15,320 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 12:34:15,320 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-12-07 12:34:15,320 INFO L246 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2019-12-07 12:34:15,320 INFO L246 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-12-07 12:34:15,321 INFO L246 CegarLoopResult]: For program point L21(lines 21 26) no Hoare annotation was computed. [2019-12-07 12:34:15,321 INFO L242 CegarLoopResult]: At program point L21-2(lines 20 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 2147483647) (<= 0 ULTIMATE.start_main_~v2~0) (<= ULTIMATE.start_main_~m~0 2147483647) (<= 0 ULTIMATE.start_main_~m~0) (<= 0 ULTIMATE.start_main_~n~0) (<= 0 (+ ULTIMATE.start_main_~v1~0 1)) (<= ULTIMATE.start_main_~v1~0 2147483647)) [2019-12-07 12:34:15,321 INFO L246 CegarLoopResult]: For program point L17(lines 17 28) no Hoare annotation was computed. [2019-12-07 12:34:15,321 INFO L249 CegarLoopResult]: At program point L17-1(lines 17 28) the Hoare annotation is: true [2019-12-07 12:34:15,321 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-12-07 12:34:15,321 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-12-07 12:34:15,321 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 12:34:15,322 INFO L246 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2019-12-07 12:34:15,322 INFO L246 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-12-07 12:34:15,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:34:15 BoogieIcfgContainer [2019-12-07 12:34:15,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:34:15,337 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:34:15,337 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:34:15,337 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:34:15,337 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:34:14" (3/4) ... [2019-12-07 12:34:15,340 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 12:34:15,346 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 12:34:15,346 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 12:34:15,346 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 12:34:15,375 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f157d948-85a8-4b1c-ad1c-0b6c21d7ada0/bin/utaipan/witness.graphml [2019-12-07 12:34:15,375 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:34:15,377 INFO L168 Benchmark]: Toolchain (without parser) took 1444.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 947.8 MB in the beginning and 966.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 82.9 MB. Max. memory is 11.5 GB. [2019-12-07 12:34:15,377 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:34:15,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -150.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:34:15,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.57 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:34:15,378 INFO L168 Benchmark]: Boogie Preprocessor took 11.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:34:15,378 INFO L168 Benchmark]: RCFGBuilder took 155.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 12:34:15,379 INFO L168 Benchmark]: TraceAbstraction took 1043.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 971.5 MB in the end (delta: 108.0 MB). Peak memory consumption was 108.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:34:15,379 INFO L168 Benchmark]: Witness Printer took 38.55 ms. Allocated memory is still 1.1 GB. Free memory was 971.5 MB in the beginning and 966.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 12:34:15,381 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -150.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.57 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 155.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1043.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 971.5 MB in the end (delta: 108.0 MB). Peak memory consumption was 108.0 MB. Max. memory is 11.5 GB. * Witness Printer took 38.55 ms. Allocated memory is still 1.1 GB. Free memory was 971.5 MB in the beginning and 966.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: 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: 22]: 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((((n <= 2147483647 && 0 <= v2) && m <= 2147483647) && 0 <= m) && 0 <= n) && 0 <= v1 + 1) && v1 <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: SAFE, OverallTime: 0.9s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 36 SDslu, 8 SDs, 0 SdLazy, 50 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 25 HoareAnnotationTreeSize, 2 FomulaSimplifications, 81 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 1172 SizeOfPredicates, 0 NumberOfNonLiveVariables, 29 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 0/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 145, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 7, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 26, TOOLS_POST_TIME[ms]: 16, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 26, TOOLS_QUANTIFIERELIM_TIME[ms]: 11, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 2, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 43, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 83, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 6, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME[ms]: 7, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 104, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 104, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 6, DAG_COMPRESSION_PROCESSED_NODES: 62, DAG_COMPRESSION_RETAINED_NODES: 29, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...