./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Pure2Phase-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3e6cfd52-deae-40cd-915a-826fdc73d4a2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3e6cfd52-deae-40cd-915a-826fdc73d4a2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3e6cfd52-deae-40cd-915a-826fdc73d4a2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3e6cfd52-deae-40cd-915a-826fdc73d4a2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Pure2Phase-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3e6cfd52-deae-40cd-915a-826fdc73d4a2/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3e6cfd52-deae-40cd-915a-826fdc73d4a2/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash aad7ddb2e0d4476ced8f52bbccb469aff17d069d ............................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:54:53,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:53,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:53,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:53,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:53,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:53,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:53,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:53,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:53,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:53,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:53,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:53,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:53,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:53,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:53,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:53,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:53,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:53,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:53,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:53,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:53,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:53,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:53,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:53,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:53,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:53,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:53,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:53,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:53,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:53,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:53,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:53,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:53,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:53,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:53,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:53,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:53,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:53,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:53,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:53,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:53,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3e6cfd52-deae-40cd-915a-826fdc73d4a2/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-10-22 08:54:53,310 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:53,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:53,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:53,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:53,314 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:53,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:53,314 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:54:53,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:53,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:53,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:54:53,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:54:53,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:54:53,315 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 08:54:53,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:54:53,315 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:53,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:54:53,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:53,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:53,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:54:53,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:54:53,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:54:53,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:53,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:54:53,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:54:53,317 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:53,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:54:53,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:54:53,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_3e6cfd52-deae-40cd-915a-826fdc73d4a2/bin/uautomizer 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 -> Automizer 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 -> aad7ddb2e0d4476ced8f52bbccb469aff17d069d [2019-10-22 08:54:53,349 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:53,359 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:53,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:53,363 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:53,364 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:53,367 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3e6cfd52-deae-40cd-915a-826fdc73d4a2/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Pure2Phase-2.c [2019-10-22 08:54:53,417 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3e6cfd52-deae-40cd-915a-826fdc73d4a2/bin/uautomizer/data/e35ce8583/840efc73b0984686878b90dfabb46ab1/FLAG0b36e0fd7 [2019-10-22 08:54:53,774 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:53,775 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3e6cfd52-deae-40cd-915a-826fdc73d4a2/sv-benchmarks/c/termination-crafted/Pure2Phase-2.c [2019-10-22 08:54:53,779 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3e6cfd52-deae-40cd-915a-826fdc73d4a2/bin/uautomizer/data/e35ce8583/840efc73b0984686878b90dfabb46ab1/FLAG0b36e0fd7 [2019-10-22 08:54:54,208 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3e6cfd52-deae-40cd-915a-826fdc73d4a2/bin/uautomizer/data/e35ce8583/840efc73b0984686878b90dfabb46ab1 [2019-10-22 08:54:54,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:54,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:54:54,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:54,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:54,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:54,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:54" (1/1) ... [2019-10-22 08:54:54,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c34b6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:54, skipping insertion in model container [2019-10-22 08:54:54,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:54" (1/1) ... [2019-10-22 08:54:54,228 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:54,241 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:54,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:54,366 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:54,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:54,450 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:54,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:54 WrapperNode [2019-10-22 08:54:54,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:54,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:54,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:54:54,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:54:54,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:54" (1/1) ... [2019-10-22 08:54:54,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:54" (1/1) ... [2019-10-22 08:54:54,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:54,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:54,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:54,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:54,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:54" (1/1) ... [2019-10-22 08:54:54,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:54" (1/1) ... [2019-10-22 08:54:54,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:54" (1/1) ... [2019-10-22 08:54:54,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:54" (1/1) ... [2019-10-22 08:54:54,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:54" (1/1) ... [2019-10-22 08:54:54,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:54" (1/1) ... [2019-10-22 08:54:54,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:54" (1/1) ... [2019-10-22 08:54:54,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:54,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:54,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:54,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:54,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e6cfd52-deae-40cd-915a-826fdc73d4a2/bin/uautomizer/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 [2019-10-22 08:54:54,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:54,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:54,703 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:54,703 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 08:54:54,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:54 BoogieIcfgContainer [2019-10-22 08:54:54,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:54,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:54:54,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:54:54,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:54:54,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:54:54" (1/3) ... [2019-10-22 08:54:54,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac9c013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:54, skipping insertion in model container [2019-10-22 08:54:54,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:54" (2/3) ... [2019-10-22 08:54:54,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac9c013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:54, skipping insertion in model container [2019-10-22 08:54:54,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:54" (3/3) ... [2019-10-22 08:54:54,712 INFO L109 eAbstractionObserver]: Analyzing ICFG Pure2Phase-2.c [2019-10-22 08:54:54,721 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:54:54,727 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 08:54:54,737 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 08:54:54,762 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:54:54,762 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:54:54,762 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:54:54,762 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:54,763 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:54,763 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:54:54,763 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:54,763 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:54:54,776 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-10-22 08:54:54,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 08:54:54,781 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:54,782 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 08:54:54,784 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:54,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:54,789 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-10-22 08:54:54,794 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:54,794 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072454140] [2019-10-22 08:54:54,794 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:54,795 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:54,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:54,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072454140] [2019-10-22 08:54:54,922 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:54,922 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 08:54:54,922 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200817939] [2019-10-22 08:54:54,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:54:54,935 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:54,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:54:54,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:54:54,950 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-10-22 08:54:54,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:54,986 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-10-22 08:54:54,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:54:54,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-10-22 08:54:54,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:54,995 INFO L225 Difference]: With dead ends: 19 [2019-10-22 08:54:54,995 INFO L226 Difference]: Without dead ends: 10 [2019-10-22 08:54:54,998 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:54:55,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-10-22 08:54:55,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-10-22 08:54:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 08:54:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-10-22 08:54:55,030 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 3 [2019-10-22 08:54:55,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:55,030 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-10-22 08:54:55,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:54:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-10-22 08:54:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 08:54:55,031 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:55,031 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 08:54:55,032 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:55,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:55,032 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-10-22 08:54:55,032 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:55,033 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842702739] [2019-10-22 08:54:55,033 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:55,033 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:55,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:55,061 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:55,061 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:54:55,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:54:55 BoogieIcfgContainer [2019-10-22 08:54:55,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:54:55,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:54:55,080 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:54:55,080 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:54:55,081 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:54" (3/4) ... [2019-10-22 08:54:55,083 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:54:55,113 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3e6cfd52-deae-40cd-915a-826fdc73d4a2/bin/uautomizer/witness.graphml [2019-10-22 08:54:55,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:54:55,115 INFO L168 Benchmark]: Toolchain (without parser) took 900.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -149.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:55,115 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:55,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -187.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:55,116 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:55,116 INFO L168 Benchmark]: Boogie Preprocessor took 16.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:55,117 INFO L168 Benchmark]: RCFGBuilder took 204.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:55,117 INFO L168 Benchmark]: TraceAbstraction took 374.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:55,118 INFO L168 Benchmark]: Witness Printer took 33.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:55,120 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 236.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -187.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 204.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 374.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 33.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L16] int y, z; [L17] y = __VERIFIER_nondet_int() [L18] z = __VERIFIER_nondet_int() [L19] COND TRUE z >= 0 [L20] y - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 5 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...