./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/gcd_1_true-unreach-call_true-no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_1_true-unreach-call_true-no-overflow.i -s /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d5d419a3a7f083f15010050e5cf28b10f30a132d .................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 09:44:47,752 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 09:44:47,753 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 09:44:47,760 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 09:44:47,760 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 09:44:47,760 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 09:44:47,761 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 09:44:47,762 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 09:44:47,762 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 09:44:47,763 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 09:44:47,763 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 09:44:47,763 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 09:44:47,764 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 09:44:47,764 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 09:44:47,765 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 09:44:47,765 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 09:44:47,766 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 09:44:47,767 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 09:44:47,768 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 09:44:47,768 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 09:44:47,769 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 09:44:47,769 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 09:44:47,771 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 09:44:47,771 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 09:44:47,771 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 09:44:47,771 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 09:44:47,772 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 09:44:47,772 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 09:44:47,773 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 09:44:47,773 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 09:44:47,773 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 09:44:47,774 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 09:44:47,774 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 09:44:47,774 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 09:44:47,774 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 09:44:47,775 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 09:44:47,775 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2018-12-09 09:44:47,782 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 09:44:47,782 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 09:44:47,783 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 09:44:47,783 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 09:44:47,783 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 09:44:47,783 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 09:44:47,783 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 09:44:47,783 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 09:44:47,783 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 09:44:47,783 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 09:44:47,784 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 09:44:47,784 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 09:44:47,784 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 09:44:47,784 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 09:44:47,784 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 09:44:47,784 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 09:44:47,784 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 09:44:47,784 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 09:44:47,785 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 09:44:47,785 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 09:44:47,785 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 09:44:47,785 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 09:44:47,785 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-09 09:44:47,785 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 09:44:47,785 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 09:44:47,785 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 09:44:47,785 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 09:44:47,785 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 09:44:47,785 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 09:44:47,786 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 09:44:47,786 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:44:47,786 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 09:44:47,786 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 09:44:47,786 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 09:44:47,786 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 09:44:47,786 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 09:44:47,786 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 09:44:47,786 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 09:44:47,786 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5d419a3a7f083f15010050e5cf28b10f30a132d [2018-12-09 09:44:47,804 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 09:44:47,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 09:44:47,815 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 09:44:47,816 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 09:44:47,816 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 09:44:47,817 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/../../sv-benchmarks/c/bitvector/gcd_1_true-unreach-call_true-no-overflow.i [2018-12-09 09:44:47,858 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/data/94a1252c1/654a2fd9be264074a82083c002de9fb7/FLAGc24257781 [2018-12-09 09:44:48,230 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 09:44:48,230 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/sv-benchmarks/c/bitvector/gcd_1_true-unreach-call_true-no-overflow.i [2018-12-09 09:44:48,233 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/data/94a1252c1/654a2fd9be264074a82083c002de9fb7/FLAGc24257781 [2018-12-09 09:44:48,241 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/data/94a1252c1/654a2fd9be264074a82083c002de9fb7 [2018-12-09 09:44:48,243 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 09:44:48,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 09:44:48,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 09:44:48,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 09:44:48,246 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 09:44:48,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:44:48" (1/1) ... [2018-12-09 09:44:48,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b4367c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:48, skipping insertion in model container [2018-12-09 09:44:48,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:44:48" (1/1) ... [2018-12-09 09:44:48,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 09:44:48,263 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 09:44:48,353 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:44:48,355 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 09:44:48,365 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:44:48,373 INFO L195 MainTranslator]: Completed translation [2018-12-09 09:44:48,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:48 WrapperNode [2018-12-09 09:44:48,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 09:44:48,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 09:44:48,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 09:44:48,374 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 09:44:48,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:48" (1/1) ... [2018-12-09 09:44:48,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:48" (1/1) ... [2018-12-09 09:44:48,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 09:44:48,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 09:44:48,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 09:44:48,386 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 09:44:48,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:48" (1/1) ... [2018-12-09 09:44:48,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:48" (1/1) ... [2018-12-09 09:44:48,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:48" (1/1) ... [2018-12-09 09:44:48,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:48" (1/1) ... [2018-12-09 09:44:48,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:48" (1/1) ... [2018-12-09 09:44:48,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:48" (1/1) ... [2018-12-09 09:44:48,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:48" (1/1) ... [2018-12-09 09:44:48,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 09:44:48,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 09:44:48,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 09:44:48,399 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 09:44:48,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:44:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 09:44:48,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 09:44:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 09:44:48,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 09:44:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 09:44:48,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 09:44:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 09:44:48,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 09:44:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure gcd_test [2018-12-09 09:44:48,471 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd_test [2018-12-09 09:44:48,571 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 09:44:48,571 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 09:44:48,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:44:48 BoogieIcfgContainer [2018-12-09 09:44:48,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 09:44:48,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 09:44:48,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 09:44:48,574 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 09:44:48,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:44:48" (1/3) ... [2018-12-09 09:44:48,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f855b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:44:48, skipping insertion in model container [2018-12-09 09:44:48,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:48" (2/3) ... [2018-12-09 09:44:48,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f855b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:44:48, skipping insertion in model container [2018-12-09 09:44:48,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:44:48" (3/3) ... [2018-12-09 09:44:48,577 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1_true-unreach-call_true-no-overflow.i [2018-12-09 09:44:48,586 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 09:44:48,592 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-09 09:44:48,605 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-09 09:44:48,624 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 09:44:48,624 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 09:44:48,624 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 09:44:48,624 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 09:44:48,624 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 09:44:48,624 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 09:44:48,624 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 09:44:48,624 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 09:44:48,635 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-12-09 09:44:48,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 09:44:48,638 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:44:48,639 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:44:48,641 INFO L423 AbstractCegarLoop]: === Iteration 1 === [gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 09:44:48,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:44:48,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1842922724, now seen corresponding path program 1 times [2018-12-09 09:44:48,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:44:48,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:44:48,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:44:48,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:44:48,674 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:44:48,693 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 09:44:48,693 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 09:44:48,693 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/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 [2018-12-09 09:44:48,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:44:48,701 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 09:44:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:44:48,723 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 09:44:48,724 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 09:44:48,725 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:44:48,725 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 09:44:48,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:44:48,731 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 09:44:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:44:48,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:44:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:44:48,785 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:44:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:44:48,825 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:44:48,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2018-12-09 09:44:48,825 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:44:48,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 09:44:48,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 09:44:48,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-12-09 09:44:48,836 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2018-12-09 09:44:48,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:44:48,879 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2018-12-09 09:44:48,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 09:44:48,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-12-09 09:44:48,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:44:48,886 INFO L225 Difference]: With dead ends: 53 [2018-12-09 09:44:48,886 INFO L226 Difference]: Without dead ends: 17 [2018-12-09 09:44:48,888 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-12-09 09:44:48,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-09 09:44:48,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-12-09 09:44:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-09 09:44:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-12-09 09:44:48,908 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2018-12-09 09:44:48,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:44:48,908 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-12-09 09:44:48,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 09:44:48,908 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-12-09 09:44:48,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 09:44:48,908 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:44:48,909 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:44:48,909 INFO L423 AbstractCegarLoop]: === Iteration 2 === [gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 09:44:48,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:44:48,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1296035681, now seen corresponding path program 1 times [2018-12-09 09:44:48,909 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:44:48,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:44:48,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:44:48,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:44:48,910 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:44:48,912 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 09:44:48,912 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 09:44:48,912 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 09:44:48,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:44:48,918 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 09:44:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:44:48,935 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 09:44:48,935 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 09:44:48,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:44:48,935 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 09:44:48,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:44:48,941 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 09:44:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:44:48,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:44:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:44:48,964 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:44:48,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:44:49,012 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:44:49,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-12-09 09:44:49,013 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:44:49,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 09:44:49,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 09:44:49,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-12-09 09:44:49,014 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2018-12-09 09:44:49,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:44:49,023 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-12-09 09:44:49,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 09:44:49,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-12-09 09:44:49,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:44:49,024 INFO L225 Difference]: With dead ends: 17 [2018-12-09 09:44:49,024 INFO L226 Difference]: Without dead ends: 12 [2018-12-09 09:44:49,024 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-12-09 09:44:49,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-09 09:44:49,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-09 09:44:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-09 09:44:49,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2018-12-09 09:44:49,026 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2018-12-09 09:44:49,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:44:49,026 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2018-12-09 09:44:49,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 09:44:49,027 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2018-12-09 09:44:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 09:44:49,027 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:44:49,027 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:44:49,027 INFO L423 AbstractCegarLoop]: === Iteration 3 === [gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 09:44:49,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:44:49,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1296029659, now seen corresponding path program 1 times [2018-12-09 09:44:49,027 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:44:49,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:44:49,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:44:49,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:44:49,028 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:44:49,029 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 09:44:49,030 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 09:44:49,030 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 09:44:49,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:44:49,036 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 09:44:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:44:49,052 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 09:44:49,052 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 09:44:49,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:44:49,052 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 09:44:49,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:44:49,059 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 09:44:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:44:49,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:44:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:44:49,066 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:44:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:44:49,089 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:44:49,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-12-09 09:44:49,090 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:44:49,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 09:44:49,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 09:44:49,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:44:49,090 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 3 states. [2018-12-09 09:44:49,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:44:49,094 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2018-12-09 09:44:49,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 09:44:49,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-09 09:44:49,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:44:49,094 INFO L225 Difference]: With dead ends: 12 [2018-12-09 09:44:49,094 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 09:44:49,095 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 09:44:49,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 09:44:49,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 09:44:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 09:44:49,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 09:44:49,095 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-12-09 09:44:49,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:44:49,095 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 09:44:49,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 09:44:49,095 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 09:44:49,096 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 09:44:49,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 09:44:49,112 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 09:44:49,112 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 09:44:49,112 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 09:44:49,112 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 09:44:49,112 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 09:44:49,112 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 09:44:49,112 INFO L444 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (and (< 0 main_~y~0) (<= 0 (+ main_~x~0 128))) [2018-12-09 09:44:49,112 INFO L448 ceAbstractionStarter]: For program point L32(lines 32 36) no Hoare annotation was computed. [2018-12-09 09:44:49,112 INFO L448 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2018-12-09 09:44:49,112 INFO L448 ceAbstractionStarter]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2018-12-09 09:44:49,113 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 26 39) the Hoare annotation is: true [2018-12-09 09:44:49,113 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 26 39) no Hoare annotation was computed. [2018-12-09 09:44:49,113 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 26 39) no Hoare annotation was computed. [2018-12-09 09:44:49,113 INFO L444 ceAbstractionStarter]: At program point L35(line 35) the Hoare annotation is: (<= 0 (+ main_~x~0 128)) [2018-12-09 09:44:49,113 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2018-12-09 09:44:49,113 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2018-12-09 09:44:49,113 INFO L448 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2018-12-09 09:44:49,113 INFO L448 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-12-09 09:44:49,113 INFO L448 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2018-12-09 09:44:49,113 INFO L448 ceAbstractionStarter]: For program point gcd_testEXIT(lines 10 23) no Hoare annotation was computed. [2018-12-09 09:44:49,113 INFO L448 ceAbstractionStarter]: For program point L17-1(lines 11 23) no Hoare annotation was computed. [2018-12-09 09:44:49,113 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-12-09 09:44:49,113 INFO L448 ceAbstractionStarter]: For program point L17-2(lines 17 21) no Hoare annotation was computed. [2018-12-09 09:44:49,113 INFO L448 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-12-09 09:44:49,113 INFO L448 ceAbstractionStarter]: For program point gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2018-12-09 09:44:49,114 INFO L448 ceAbstractionStarter]: For program point gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-12-09 09:44:49,114 INFO L451 ceAbstractionStarter]: At program point gcd_testENTRY(lines 10 23) the Hoare annotation is: true [2018-12-09 09:44:49,114 INFO L448 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-12-09 09:44:49,114 INFO L448 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-12-09 09:44:49,114 INFO L448 ceAbstractionStarter]: For program point L14-2(line 14) no Hoare annotation was computed. [2018-12-09 09:44:49,114 INFO L448 ceAbstractionStarter]: For program point gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2018-12-09 09:44:49,114 INFO L448 ceAbstractionStarter]: For program point L14-4(lines 11 23) no Hoare annotation was computed. [2018-12-09 09:44:49,114 INFO L448 ceAbstractionStarter]: For program point gcd_testFINAL(lines 10 23) no Hoare annotation was computed. [2018-12-09 09:44:49,114 INFO L448 ceAbstractionStarter]: For program point gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-12-09 09:44:49,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:44:49 BoogieIcfgContainer [2018-12-09 09:44:49,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 09:44:49,116 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 09:44:49,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 09:44:49,116 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 09:44:49,117 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:44:48" (3/4) ... [2018-12-09 09:44:49,119 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 09:44:49,123 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 09:44:49,124 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 09:44:49,124 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-09 09:44:49,124 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd_test [2018-12-09 09:44:49,127 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-09 09:44:49,127 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 09:44:49,127 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 09:44:49,153 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_80d77c3e-107b-46e3-adb5-a9d764c2eb3d/bin-2019/utaipan/witness.graphml [2018-12-09 09:44:49,154 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 09:44:49,154 INFO L168 Benchmark]: Toolchain (without parser) took 910.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 949.7 MB in the beginning and 998.5 MB in the end (delta: -48.8 MB). Peak memory consumption was 66.0 MB. Max. memory is 11.5 GB. [2018-12-09 09:44:49,155 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:44:49,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 129.60 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-12-09 09:44:49,155 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.50 ms. Allocated memory is still 1.0 GB. Free memory is still 938.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:44:49,156 INFO L168 Benchmark]: Boogie Preprocessor took 13.29 ms. Allocated memory is still 1.0 GB. Free memory is still 938.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:44:49,156 INFO L168 Benchmark]: RCFGBuilder took 172.06 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 938.8 MB in the beginning and 1.1 GB in the end (delta: -155.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-12-09 09:44:49,156 INFO L168 Benchmark]: TraceAbstraction took 544.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.6 MB). Peak memory consumption was 92.6 MB. Max. memory is 11.5 GB. [2018-12-09 09:44:49,156 INFO L168 Benchmark]: Witness Printer took 37.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 998.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-09 09:44:49,158 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 129.60 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.50 ms. Allocated memory is still 1.0 GB. Free memory is still 938.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.29 ms. Allocated memory is still 1.0 GB. Free memory is still 938.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 172.06 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 938.8 MB in the beginning and 1.1 GB in the end (delta: -155.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 544.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.6 MB). Peak memory consumption was 92.6 MB. Max. memory is 11.5 GB. * Witness Printer took 37.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 998.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 4 error locations. SAFE Result, 0.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 46 SDtfs, 44 SDslu, 85 SDs, 0 SdLazy, 32 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 9 PreInvPairs, 10 NumberOfFragments, 20 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 1202 SizeOfPredicates, 6 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...