./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/gcd_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_de5ab8d0-0b91-4727-8d1e-f4d6cf45b76f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_de5ab8d0-0b91-4727-8d1e-f4d6cf45b76f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_de5ab8d0-0b91-4727-8d1e-f4d6cf45b76f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_de5ab8d0-0b91-4727-8d1e-f4d6cf45b76f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_de5ab8d0-0b91-4727-8d1e-f4d6cf45b76f/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_de5ab8d0-0b91-4727-8d1e-f4d6cf45b76f/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 32bit --witnessprinter.graph.data.programhash ca12b384c8180063e3f1c5738f7063e9219b0df5 ............................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:25,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:25,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:25,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:25,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:25,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:25,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:25,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:25,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:25,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:25,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:25,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:25,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:25,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:25,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:25,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:25,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:25,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:25,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:25,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:25,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:25,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:25,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:25,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:25,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:25,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:25,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:25,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:25,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:25,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:25,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:25,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:25,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:25,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:25,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:25,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:25,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:25,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:25,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:25,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:25,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:25,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_de5ab8d0-0b91-4727-8d1e-f4d6cf45b76f/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2019-10-22 11:25:25,843 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:25,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:25,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:25,844 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:25,845 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:25,845 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:25,845 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:25,845 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:25,845 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:25,845 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:25,846 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:25,846 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:25,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:25,847 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:25,847 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:25:25,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:25,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:25,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:25,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:25,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:25,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:25,848 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 11:25:25,848 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:25,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:25,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:25,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:25,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:25,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:25,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:25,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:25,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:25,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:25,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:25,850 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:25,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:25,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:25,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:25,851 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/working_dir_de5ab8d0-0b91-4727-8d1e-f4d6cf45b76f/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca12b384c8180063e3f1c5738f7063e9219b0df5 [2019-10-22 11:25:25,881 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:25,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:25,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:25,899 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:25,899 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:25,900 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_de5ab8d0-0b91-4727-8d1e-f4d6cf45b76f/bin/utaipan/../../sv-benchmarks/c/bitvector/gcd_2.c [2019-10-22 11:25:25,947 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_de5ab8d0-0b91-4727-8d1e-f4d6cf45b76f/bin/utaipan/data/44b783f89/e2bdbb91c500446e892dbd4e77d2fee4/FLAG287995b97 [2019-10-22 11:25:26,302 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:26,303 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_de5ab8d0-0b91-4727-8d1e-f4d6cf45b76f/sv-benchmarks/c/bitvector/gcd_2.c [2019-10-22 11:25:26,308 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_de5ab8d0-0b91-4727-8d1e-f4d6cf45b76f/bin/utaipan/data/44b783f89/e2bdbb91c500446e892dbd4e77d2fee4/FLAG287995b97 [2019-10-22 11:25:26,318 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_de5ab8d0-0b91-4727-8d1e-f4d6cf45b76f/bin/utaipan/data/44b783f89/e2bdbb91c500446e892dbd4e77d2fee4 [2019-10-22 11:25:26,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:26,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:26,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:26,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:26,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:26,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:26" (1/1) ... [2019-10-22 11:25:26,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182b198d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:26, skipping insertion in model container [2019-10-22 11:25:26,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:26" (1/1) ... [2019-10-22 11:25:26,339 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:26,357 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:26,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:26,552 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:26,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:26,665 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:26,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:26 WrapperNode [2019-10-22 11:25:26,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:26,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:26,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:26,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:26,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:26" (1/1) ... [2019-10-22 11:25:26,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:26" (1/1) ... [2019-10-22 11:25:26,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:26,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:26,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:26,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:26,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:26" (1/1) ... [2019-10-22 11:25:26,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:26" (1/1) ... [2019-10-22 11:25:26,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:26" (1/1) ... [2019-10-22 11:25:26,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:26" (1/1) ... [2019-10-22 11:25:26,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:26" (1/1) ... [2019-10-22 11:25:26,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:26" (1/1) ... [2019-10-22 11:25:26,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:26" (1/1) ... [2019-10-22 11:25:26,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:26,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:26,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:26,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:26,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_de5ab8d0-0b91-4727-8d1e-f4d6cf45b76f/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 [2019-10-22 11:25:26,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:26,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:26,917 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:26,917 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-22 11:25:26,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:26 BoogieIcfgContainer [2019-10-22 11:25:26,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:26,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:26,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:26,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:26,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:26" (1/3) ... [2019-10-22 11:25:26,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b41048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:26, skipping insertion in model container [2019-10-22 11:25:26,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:26" (2/3) ... [2019-10-22 11:25:26,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b41048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:26, skipping insertion in model container [2019-10-22 11:25:26,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:26" (3/3) ... [2019-10-22 11:25:26,924 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd_2.c [2019-10-22 11:25:26,932 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:26,939 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 11:25:26,948 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 11:25:26,969 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:26,969 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:26,969 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:26,969 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:26,969 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:26,969 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:26,969 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:26,969 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:26,982 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-10-22 11:25:26,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 11:25:26,987 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:26,988 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 11:25:26,989 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:25:26,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:26,994 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-10-22 11:25:27,002 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:27,003 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35607194] [2019-10-22 11:25:27,003 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:27,003 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:27,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:27,128 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 11:25:27,129 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35607194] [2019-10-22 11:25:27,130 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:27,130 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 11:25:27,130 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936992372] [2019-10-22 11:25:27,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:27,136 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:27,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:27,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:27,149 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-10-22 11:25:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:27,186 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2019-10-22 11:25:27,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:27,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-10-22 11:25:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:27,196 INFO L225 Difference]: With dead ends: 40 [2019-10-22 11:25:27,196 INFO L226 Difference]: Without dead ends: 10 [2019-10-22 11:25:27,199 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 11:25:27,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-10-22 11:25:27,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-10-22 11:25:27,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 11:25:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-10-22 11:25:27,243 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 3 [2019-10-22 11:25:27,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:27,244 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-10-22 11:25:27,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:27,244 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-10-22 11:25:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 11:25:27,244 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:27,244 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 11:25:27,245 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:25:27,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:27,245 INFO L82 PathProgramCache]: Analyzing trace with hash 957349, now seen corresponding path program 1 times [2019-10-22 11:25:27,245 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:27,245 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080821383] [2019-10-22 11:25:27,246 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:27,246 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:27,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:27,278 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 11:25:27,279 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080821383] [2019-10-22 11:25:27,279 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:27,279 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:27,279 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65368632] [2019-10-22 11:25:27,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:27,281 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:27,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:27,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:27,281 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2019-10-22 11:25:27,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:27,291 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-10-22 11:25:27,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:27,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-10-22 11:25:27,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:27,293 INFO L225 Difference]: With dead ends: 10 [2019-10-22 11:25:27,293 INFO L226 Difference]: Without dead ends: 9 [2019-10-22 11:25:27,294 INFO L600 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 [2019-10-22 11:25:27,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-10-22 11:25:27,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-10-22 11:25:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 11:25:27,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-10-22 11:25:27,295 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2019-10-22 11:25:27,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:27,296 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-10-22 11:25:27,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:27,296 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-10-22 11:25:27,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 11:25:27,296 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:27,296 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 11:25:27,297 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:25:27,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:27,297 INFO L82 PathProgramCache]: Analyzing trace with hash 963371, now seen corresponding path program 1 times [2019-10-22 11:25:27,297 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:27,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962827859] [2019-10-22 11:25:27,297 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:27,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:27,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:27,316 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 11:25:27,317 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962827859] [2019-10-22 11:25:27,317 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:27,317 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 11:25:27,317 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511834522] [2019-10-22 11:25:27,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:27,318 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:27,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:27,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:27,318 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2019-10-22 11:25:27,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:27,324 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-10-22 11:25:27,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:27,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-10-22 11:25:27,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:27,326 INFO L225 Difference]: With dead ends: 9 [2019-10-22 11:25:27,326 INFO L226 Difference]: Without dead ends: 8 [2019-10-22 11:25:27,326 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 11:25:27,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-10-22 11:25:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-10-22 11:25:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 11:25:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-10-22 11:25:27,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2019-10-22 11:25:27,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:27,328 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-10-22 11:25:27,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:27,328 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-10-22 11:25:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:25:27,329 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:27,329 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:25:27,329 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:25:27,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:27,329 INFO L82 PathProgramCache]: Analyzing trace with hash 29864549, now seen corresponding path program 1 times [2019-10-22 11:25:27,329 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:27,330 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939772744] [2019-10-22 11:25:27,330 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:27,330 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:27,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:27,368 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 11:25:27,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939772744] [2019-10-22 11:25:27,369 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:27,369 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:27,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292359638] [2019-10-22 11:25:27,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:27,369 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:27,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:27,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:27,370 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2019-10-22 11:25:27,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:27,384 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-10-22 11:25:27,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:27,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-10-22 11:25:27,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:27,385 INFO L225 Difference]: With dead ends: 8 [2019-10-22 11:25:27,385 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:25:27,385 INFO L600 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 [2019-10-22 11:25:27,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:25:27,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:25:27,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:25:27,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:25:27,387 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-10-22 11:25:27,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:27,387 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:25:27,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:27,387 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:25:27,387 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:25:27,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:25:27,404 INFO L443 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-10-22 11:25:27,405 INFO L443 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2019-10-22 11:25:27,405 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-10-22 11:25:27,405 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:25:27,405 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:25:27,405 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-10-22 11:25:27,405 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:25:27,405 INFO L443 ceAbstractionStarter]: For program point L17-1(lines 11 23) no Hoare annotation was computed. [2019-10-22 11:25:27,405 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 21) no Hoare annotation was computed. [2019-10-22 11:25:27,406 INFO L446 ceAbstractionStarter]: At program point L38(lines 26 39) the Hoare annotation is: true [2019-10-22 11:25:27,406 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-10-22 11:25:27,406 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2019-10-22 11:25:27,406 INFO L443 ceAbstractionStarter]: For program point L34(lines 34 36) no Hoare annotation was computed. [2019-10-22 11:25:27,406 INFO L446 ceAbstractionStarter]: At program point L34-1(lines 34 36) the Hoare annotation is: true [2019-10-22 11:25:27,407 INFO L446 ceAbstractionStarter]: At program point L22(lines 10 23) the Hoare annotation is: true [2019-10-22 11:25:27,407 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-10-22 11:25:27,407 INFO L443 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-10-22 11:25:27,407 INFO L443 ceAbstractionStarter]: For program point L14-2(line 14) no Hoare annotation was computed. [2019-10-22 11:25:27,407 INFO L443 ceAbstractionStarter]: For program point L14-4(lines 11 23) no Hoare annotation was computed. [2019-10-22 11:25:27,407 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-10-22 11:25:27,407 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2019-10-22 11:25:27,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:25:27 BoogieIcfgContainer [2019-10-22 11:25:27,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:25:27,415 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:25:27,415 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:25:27,415 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:25:27,415 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:26" (3/4) ... [2019-10-22 11:25:27,418 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:25:27,426 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 11:25:27,426 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:25:27,463 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_de5ab8d0-0b91-4727-8d1e-f4d6cf45b76f/bin/utaipan/witness.graphml [2019-10-22 11:25:27,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:25:27,465 INFO L168 Benchmark]: Toolchain (without parser) took 1142.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -107.3 MB). Peak memory consumption was 5.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:27,465 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:27,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:27,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.48 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. [2019-10-22 11:25:27,466 INFO L168 Benchmark]: Boogie Preprocessor took 24.50 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. [2019-10-22 11:25:27,467 INFO L168 Benchmark]: RCFGBuilder took 194.36 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:27,467 INFO L168 Benchmark]: TraceAbstraction took 495.34 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: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:27,467 INFO L168 Benchmark]: Witness Printer took 48.39 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. [2019-10-22 11:25:27,469 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 343.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.48 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 24.50 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. * RCFGBuilder took 194.36 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 495.34 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: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. * Witness Printer took 48.39 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 4 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 24 SDslu, 17 SDs, 0 SdLazy, 19 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 3 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 146 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 correct! Received shutdown request...