./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c0225477-6682-4b95-90e5-a8a3fc09be9b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c0225477-6682-4b95-90e5-a8a3fc09be9b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c0225477-6682-4b95-90e5-a8a3fc09be9b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c0225477-6682-4b95-90e5-a8a3fc09be9b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c0225477-6682-4b95-90e5-a8a3fc09be9b/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c0225477-6682-4b95-90e5-a8a3fc09be9b/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9f46c7b2b1e4ea0f04ba596f18cee8c318356c44 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 22:10:00,051 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 22:10:00,052 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 22:10:00,058 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 22:10:00,059 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 22:10:00,060 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 22:10:00,060 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 22:10:00,062 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 22:10:00,063 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 22:10:00,063 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 22:10:00,064 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 22:10:00,064 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 22:10:00,065 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 22:10:00,066 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 22:10:00,066 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 22:10:00,067 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 22:10:00,068 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 22:10:00,069 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 22:10:00,070 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 22:10:00,072 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 22:10:00,072 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 22:10:00,073 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 22:10:00,075 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 22:10:00,075 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 22:10:00,075 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 22:10:00,076 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 22:10:00,077 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 22:10:00,077 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 22:10:00,078 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 22:10:00,079 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 22:10:00,079 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 22:10:00,080 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 22:10:00,080 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 22:10:00,080 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 22:10:00,081 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 22:10:00,081 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 22:10:00,081 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c0225477-6682-4b95-90e5-a8a3fc09be9b/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-22 22:10:00,091 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 22:10:00,092 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 22:10:00,092 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 22:10:00,092 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 22:10:00,093 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-22 22:10:00,093 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-22 22:10:00,093 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-22 22:10:00,093 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-22 22:10:00,093 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-22 22:10:00,093 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-22 22:10:00,093 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-22 22:10:00,094 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-22 22:10:00,094 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-22 22:10:00,094 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 22:10:00,095 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-22 22:10:00,095 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 22:10:00,095 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 22:10:00,095 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 22:10:00,095 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 22:10:00,095 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 22:10:00,095 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-22 22:10:00,096 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 22:10:00,096 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 22:10:00,096 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 22:10:00,096 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 22:10:00,096 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 22:10:00,096 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 22:10:00,097 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 22:10:00,097 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 22:10:00,097 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 22:10:00,097 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 22:10:00,097 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 22:10:00,097 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-22 22:10:00,097 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 22:10:00,097 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 22:10:00,098 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-22 22:10:00,098 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_c0225477-6682-4b95-90e5-a8a3fc09be9b/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f46c7b2b1e4ea0f04ba596f18cee8c318356c44 [2018-11-22 22:10:00,121 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 22:10:00,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 22:10:00,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 22:10:00,134 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 22:10:00,135 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 22:10:00,135 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c0225477-6682-4b95-90e5-a8a3fc09be9b/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03_false-no-overflow.c [2018-11-22 22:10:00,171 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c0225477-6682-4b95-90e5-a8a3fc09be9b/bin-2019/utaipan/data/c36175cd1/cac61d7d550d48d8a908537815255c10/FLAG1bf097647 [2018-11-22 22:10:00,566 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 22:10:00,566 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c0225477-6682-4b95-90e5-a8a3fc09be9b/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03_false-no-overflow.c [2018-11-22 22:10:00,570 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c0225477-6682-4b95-90e5-a8a3fc09be9b/bin-2019/utaipan/data/c36175cd1/cac61d7d550d48d8a908537815255c10/FLAG1bf097647 [2018-11-22 22:10:00,578 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c0225477-6682-4b95-90e5-a8a3fc09be9b/bin-2019/utaipan/data/c36175cd1/cac61d7d550d48d8a908537815255c10 [2018-11-22 22:10:00,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 22:10:00,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 22:10:00,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 22:10:00,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 22:10:00,585 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 22:10:00,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:10:00" (1/1) ... [2018-11-22 22:10:00,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd21f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:10:00, skipping insertion in model container [2018-11-22 22:10:00,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:10:00" (1/1) ... [2018-11-22 22:10:00,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 22:10:00,606 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 22:10:00,704 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:10:00,706 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 22:10:00,716 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:10:00,724 INFO L195 MainTranslator]: Completed translation [2018-11-22 22:10:00,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:10:00 WrapperNode [2018-11-22 22:10:00,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 22:10:00,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 22:10:00,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 22:10:00,725 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 22:10:00,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:10:00" (1/1) ... [2018-11-22 22:10:00,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:10:00" (1/1) ... [2018-11-22 22:10:00,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 22:10:00,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 22:10:00,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 22:10:00,739 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 22:10:00,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:10:00" (1/1) ... [2018-11-22 22:10:00,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:10:00" (1/1) ... [2018-11-22 22:10:00,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:10:00" (1/1) ... [2018-11-22 22:10:00,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:10:00" (1/1) ... [2018-11-22 22:10:00,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:10:00" (1/1) ... [2018-11-22 22:10:00,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:10:00" (1/1) ... [2018-11-22 22:10:00,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:10:00" (1/1) ... [2018-11-22 22:10:00,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 22:10:00,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 22:10:00,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 22:10:00,753 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 22:10:00,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:10:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c0225477-6682-4b95-90e5-a8a3fc09be9b/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 [2018-11-22 22:10:00,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 22:10:00,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 22:10:00,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 22:10:00,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 22:10:00,836 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 22:10:00,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 22:10:00,962 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 22:10:00,962 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-22 22:10:00,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:10:00 BoogieIcfgContainer [2018-11-22 22:10:00,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 22:10:00,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 22:10:00,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 22:10:00,965 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 22:10:00,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:10:00" (1/3) ... [2018-11-22 22:10:00,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604ff629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:10:00, skipping insertion in model container [2018-11-22 22:10:00,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:10:00" (2/3) ... [2018-11-22 22:10:00,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604ff629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:10:00, skipping insertion in model container [2018-11-22 22:10:00,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:10:00" (3/3) ... [2018-11-22 22:10:00,968 INFO L112 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex1.03_false-no-overflow.c [2018-11-22 22:10:00,974 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 22:10:00,980 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-22 22:10:00,991 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-22 22:10:01,011 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 22:10:01,011 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 22:10:01,011 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 22:10:01,012 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 22:10:01,012 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 22:10:01,012 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 22:10:01,012 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 22:10:01,012 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 22:10:01,024 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-22 22:10:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-22 22:10:01,029 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:10:01,030 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:10:01,031 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-22 22:10:01,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:10:01,036 INFO L82 PathProgramCache]: Analyzing trace with hash -145567414, now seen corresponding path program 1 times [2018-11-22 22:10:01,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:10:01,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:10:01,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:10:01,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:10:01,072 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:10:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:10:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:10:01,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:10:01,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 22:10:01,179 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:10:01,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-22 22:10:01,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-22 22:10:01,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-22 22:10:01,191 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2018-11-22 22:10:01,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:10:01,237 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-11-22 22:10:01,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-22 22:10:01,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-22 22:10:01,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:10:01,244 INFO L225 Difference]: With dead ends: 26 [2018-11-22 22:10:01,244 INFO L226 Difference]: Without dead ends: 12 [2018-11-22 22:10:01,246 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-22 22:10:01,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-22 22:10:01,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-11-22 22:10:01,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-22 22:10:01,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-11-22 22:10:01,267 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-11-22 22:10:01,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:10:01,267 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-11-22 22:10:01,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-22 22:10:01,267 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-11-22 22:10:01,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-22 22:10:01,268 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:10:01,268 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:10:01,268 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-22 22:10:01,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:10:01,268 INFO L82 PathProgramCache]: Analyzing trace with hash -217622492, now seen corresponding path program 1 times [2018-11-22 22:10:01,269 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:10:01,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:10:01,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:10:01,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:10:01,270 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:10:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:10:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:10:01,292 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #31#return; [?] CALL call #t~ret4 := main(); [?] havoc ~x~0;havoc ~oldx~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~x~0 := #t~nondet0;havoc #t~nondet0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~oldx~0 := #t~nondet1;havoc #t~nondet1; VAL [main_~oldx~0=0, main_~x~0=1073741826] [?] #t~short2 := ~x~0 > 1; VAL [main_~oldx~0=0, main_~x~0=1073741826, |main_#t~short2|=true] [?] assume #t~short2; VAL [main_~oldx~0=0, main_~x~0=1073741826, |main_#t~short2|=true] [?] assume -2 * ~x~0 <= 2147483647; VAL [main_~oldx~0=0, main_~x~0=1073741826, |main_#t~short2|=true] [?] assume !(-2 * ~x~0 >= -2147483648); VAL [main_~oldx~0=0, main_~x~0=1073741826, |main_#t~short2|=true] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret4 := main(); [L23] havoc ~x~0; [L23] havoc ~oldx~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~oldx~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~oldx~0=0, ~x~0=1073741826] [L26] #t~short2 := ~x~0 > 1; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assume #t~short2; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 <= 2147483647; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 >= -2147483648; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret4 := main(); [L23] havoc ~x~0; [L23] havoc ~oldx~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~oldx~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~oldx~0=0, ~x~0=1073741826] [L26] #t~short2 := ~x~0 > 1; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assume #t~short2; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 <= 2147483647; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 >= -2147483648; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret4 := main(); [L23] havoc ~x~0; [L23] havoc ~oldx~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~oldx~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~oldx~0=0, ~x~0=1073741826] [L26] #t~short2 := ~x~0 > 1; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] COND TRUE #t~short2 VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 <= 2147483647; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 >= -2147483648; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret4 := main(); [L23] havoc ~x~0; [L23] havoc ~oldx~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~oldx~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~oldx~0=0, ~x~0=1073741826] [L26] #t~short2 := ~x~0 > 1; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] COND TRUE #t~short2 VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 <= 2147483647; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 >= -2147483648; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret4 := main(); [L23] havoc ~x~0; [L23] havoc ~oldx~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~oldx~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~oldx~0=0, ~x~0=1073741826] [L26] #t~short2 := ~x~0 > 1; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] COND TRUE #t~short2 VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 <= 2147483647; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 >= -2147483648; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret4 := main(); [L23] havoc ~x~0; [L23] havoc ~oldx~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~oldx~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~oldx~0=0, ~x~0=1073741826] [L26] #t~short2 := ~x~0 > 1; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] COND TRUE #t~short2 VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 <= 2147483647; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 >= -2147483648; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L23] int x, oldx; [L24] x = __VERIFIER_nondet_int() [L25] oldx = __VERIFIER_nondet_int() [L26] x > 1 && -2*x == oldx VAL [x=1073741826, x=0, x > 1 && -2*x == oldx=1] [L26] -2*x VAL [x=1073741826, x=0, x > 1 && -2*x == oldx=1] ----- [2018-11-22 22:10:01,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 10:10:01 BoogieIcfgContainer [2018-11-22 22:10:01,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 22:10:01,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 22:10:01,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 22:10:01,312 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 22:10:01,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:10:00" (3/4) ... [2018-11-22 22:10:01,314 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #31#return; [?] CALL call #t~ret4 := main(); [?] havoc ~x~0;havoc ~oldx~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~x~0 := #t~nondet0;havoc #t~nondet0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~oldx~0 := #t~nondet1;havoc #t~nondet1; VAL [main_~oldx~0=0, main_~x~0=1073741826] [?] #t~short2 := ~x~0 > 1; VAL [main_~oldx~0=0, main_~x~0=1073741826, |main_#t~short2|=true] [?] assume #t~short2; VAL [main_~oldx~0=0, main_~x~0=1073741826, |main_#t~short2|=true] [?] assume -2 * ~x~0 <= 2147483647; VAL [main_~oldx~0=0, main_~x~0=1073741826, |main_#t~short2|=true] [?] assume !(-2 * ~x~0 >= -2147483648); VAL [main_~oldx~0=0, main_~x~0=1073741826, |main_#t~short2|=true] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret4 := main(); [L23] havoc ~x~0; [L23] havoc ~oldx~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~oldx~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~oldx~0=0, ~x~0=1073741826] [L26] #t~short2 := ~x~0 > 1; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assume #t~short2; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 <= 2147483647; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 >= -2147483648; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret4 := main(); [L23] havoc ~x~0; [L23] havoc ~oldx~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~oldx~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~oldx~0=0, ~x~0=1073741826] [L26] #t~short2 := ~x~0 > 1; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assume #t~short2; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 <= 2147483647; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 >= -2147483648; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret4 := main(); [L23] havoc ~x~0; [L23] havoc ~oldx~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~oldx~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~oldx~0=0, ~x~0=1073741826] [L26] #t~short2 := ~x~0 > 1; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] COND TRUE #t~short2 VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 <= 2147483647; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 >= -2147483648; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret4 := main(); [L23] havoc ~x~0; [L23] havoc ~oldx~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~oldx~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~oldx~0=0, ~x~0=1073741826] [L26] #t~short2 := ~x~0 > 1; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] COND TRUE #t~short2 VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 <= 2147483647; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 >= -2147483648; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret4 := main(); [L23] havoc ~x~0; [L23] havoc ~oldx~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~oldx~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~oldx~0=0, ~x~0=1073741826] [L26] #t~short2 := ~x~0 > 1; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] COND TRUE #t~short2 VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 <= 2147483647; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 >= -2147483648; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret4 := main(); [L23] havoc ~x~0; [L23] havoc ~oldx~0; [L24] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L24] ~x~0 := #t~nondet0; [L24] havoc #t~nondet0; [L25] assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; [L25] ~oldx~0 := #t~nondet1; [L25] havoc #t~nondet1; VAL [~oldx~0=0, ~x~0=1073741826] [L26] #t~short2 := ~x~0 > 1; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] COND TRUE #t~short2 VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 <= 2147483647; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L26] assert -2 * ~x~0 >= -2147483648; VAL [#t~short2=true, ~oldx~0=0, ~x~0=1073741826] [L23] int x, oldx; [L24] x = __VERIFIER_nondet_int() [L25] oldx = __VERIFIER_nondet_int() [L26] x > 1 && -2*x == oldx VAL [x=1073741826, x=0, x > 1 && -2*x == oldx=1] [L26] -2*x VAL [x=0, x=1073741826, x > 1 && -2*x == oldx=1] ----- [2018-11-22 22:10:01,342 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c0225477-6682-4b95-90e5-a8a3fc09be9b/bin-2019/utaipan/witness.graphml [2018-11-22 22:10:01,342 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 22:10:01,343 INFO L168 Benchmark]: Toolchain (without parser) took 761.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -120.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. [2018-11-22 22:10:01,344 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:10:01,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.55 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:10:01,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.77 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:10:01,345 INFO L168 Benchmark]: Boogie Preprocessor took 13.96 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:10:01,345 INFO L168 Benchmark]: RCFGBuilder took 209.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -168.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-22 22:10:01,346 INFO L168 Benchmark]: TraceAbstraction took 348.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-11-22 22:10:01,346 INFO L168 Benchmark]: Witness Printer took 29.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:10:01,349 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 142.55 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.77 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.96 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 209.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -168.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 348.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 29.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, oldx; [L24] x = __VERIFIER_nondet_int() [L25] oldx = __VERIFIER_nondet_int() [L26] x > 1 && -2*x == oldx VAL [x=1073741826, x=0, x > 1 && -2*x == oldx=1] [L26] -2*x VAL [x=1073741826, x=0, x > 1 && -2*x == oldx=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 17 locations, 2 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 14 SDslu, 9 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...