./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fc527b38-53e2-4854-b198-4c3cb8e3f98b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fc527b38-53e2-4854-b198-4c3cb8e3f98b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fc527b38-53e2-4854-b198-4c3cb8e3f98b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fc527b38-53e2-4854-b198-4c3cb8e3f98b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fc527b38-53e2-4854-b198-4c3cb8e3f98b/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fc527b38-53e2-4854-b198-4c3cb8e3f98b/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f7a9b9f6f441a79f9d4bea5933ea301694cdf5e5 ......................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:48:24,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:48:24,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:48:24,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:48:24,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:48:24,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:48:24,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:48:24,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:48:24,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:48:24,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:48:24,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:48:24,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:48:24,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:48:24,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:48:24,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:48:24,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:48:24,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:48:24,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:48:24,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:48:24,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:48:24,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:48:24,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:48:24,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:48:24,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:48:25,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:48:25,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:48:25,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:48:25,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:48:25,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:48:25,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:48:25,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:48:25,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:48:25,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:48:25,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:48:25,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:48:25,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:48:25,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:48:25,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:48:25,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:48:25,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:48:25,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:48:25,010 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fc527b38-53e2-4854-b198-4c3cb8e3f98b/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-15 22:48:25,034 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:48:25,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:48:25,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:48:25,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:48:25,045 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:48:25,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:48:25,046 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 22:48:25,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:48:25,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:48:25,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:48:25,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:48:25,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:48:25,047 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-15 22:48:25,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:48:25,048 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:48:25,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:48:25,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:48:25,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:48:25,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:48:25,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:48:25,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:48:25,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:48:25,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:48:25,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:48:25,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:48:25,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:48:25,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:48:25,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fc527b38-53e2-4854-b198-4c3cb8e3f98b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7a9b9f6f441a79f9d4bea5933ea301694cdf5e5 [2019-11-15 22:48:25,084 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:48:25,097 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:48:25,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:48:25,101 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:48:25,102 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:48:25,102 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fc527b38-53e2-4854-b198-4c3cb8e3f98b/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.02.c [2019-11-15 22:48:25,158 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc527b38-53e2-4854-b198-4c3cb8e3f98b/bin/uautomizer/data/ae0a9603b/c78a4596e6254072bc91e6abce6e3ed9/FLAGb81355f3d [2019-11-15 22:48:25,523 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:48:25,523 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fc527b38-53e2-4854-b198-4c3cb8e3f98b/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.02.c [2019-11-15 22:48:25,527 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc527b38-53e2-4854-b198-4c3cb8e3f98b/bin/uautomizer/data/ae0a9603b/c78a4596e6254072bc91e6abce6e3ed9/FLAGb81355f3d [2019-11-15 22:48:25,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fc527b38-53e2-4854-b198-4c3cb8e3f98b/bin/uautomizer/data/ae0a9603b/c78a4596e6254072bc91e6abce6e3ed9 [2019-11-15 22:48:25,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:48:25,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:48:25,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:48:25,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:48:25,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:48:25,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:48:25" (1/1) ... [2019-11-15 22:48:25,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d12a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:48:25, skipping insertion in model container [2019-11-15 22:48:25,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:48:25" (1/1) ... [2019-11-15 22:48:25,977 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:48:25,990 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:48:26,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:48:26,236 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:48:26,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:48:26,271 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:48:26,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:48:26 WrapperNode [2019-11-15 22:48:26,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:48:26,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:48:26,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:48:26,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:48:26,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:48:26" (1/1) ... [2019-11-15 22:48:26,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:48:26" (1/1) ... [2019-11-15 22:48:26,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:48:26,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:48:26,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:48:26,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:48:26,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:48:26" (1/1) ... [2019-11-15 22:48:26,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:48:26" (1/1) ... [2019-11-15 22:48:26,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:48:26" (1/1) ... [2019-11-15 22:48:26,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:48:26" (1/1) ... [2019-11-15 22:48:26,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:48:26" (1/1) ... [2019-11-15 22:48:26,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:48:26" (1/1) ... [2019-11-15 22:48:26,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:48:26" (1/1) ... [2019-11-15 22:48:26,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:48:26,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:48:26,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:48:26,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:48:26,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:48:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc527b38-53e2-4854-b198-4c3cb8e3f98b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:48:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:48:26,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:48:26,583 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:48:26,583 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-15 22:48:26,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:48:26 BoogieIcfgContainer [2019-11-15 22:48:26,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:48:26,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:48:26,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:48:26,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:48:26,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:48:25" (1/3) ... [2019-11-15 22:48:26,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c551d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:48:26, skipping insertion in model container [2019-11-15 22:48:26,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:48:26" (2/3) ... [2019-11-15 22:48:26,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c551d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:48:26, skipping insertion in model container [2019-11-15 22:48:26,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:48:26" (3/3) ... [2019-11-15 22:48:26,591 INFO L109 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex1.02.c [2019-11-15 22:48:26,599 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:48:26,605 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 22:48:26,615 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 22:48:26,664 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:48:26,664 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:48:26,665 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:48:26,665 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:48:26,665 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:48:26,665 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:48:26,665 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:48:26,666 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:48:26,678 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-15 22:48:26,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-15 22:48:26,702 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:48:26,702 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-15 22:48:26,704 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 22:48:26,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:48:26,709 INFO L82 PathProgramCache]: Analyzing trace with hash 959367, now seen corresponding path program 1 times [2019-11-15 22:48:26,717 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:48:26,717 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298381732] [2019-11-15 22:48:26,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:48:26,721 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:48:26,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:48:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:48:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:48:26,842 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:48:26,843 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 22:48:26,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:48:26 BoogieIcfgContainer [2019-11-15 22:48:26,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:48:26,866 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:48:26,866 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:48:26,866 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:48:26,867 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:48:26" (3/4) ... [2019-11-15 22:48:26,868 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 22:48:26,904 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fc527b38-53e2-4854-b198-4c3cb8e3f98b/bin/uautomizer/witness.graphml [2019-11-15 22:48:26,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:48:26,906 INFO L168 Benchmark]: Toolchain (without parser) took 947.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -163.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:48:26,907 INFO L168 Benchmark]: CDTParser took 1.06 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:48:26,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -196.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-15 22:48:26,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:48:26,908 INFO L168 Benchmark]: Boogie Preprocessor took 25.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:48:26,914 INFO L168 Benchmark]: RCFGBuilder took 256.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:48:26,914 INFO L168 Benchmark]: TraceAbstraction took 279.74 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:48:26,916 INFO L168 Benchmark]: Witness Printer took 38.66 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:48:26,918 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.06 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 312.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -196.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 256.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 279.74 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 38.66 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 > 0 && x < 100 && x >= 2*oldx + 10 [L26] 2*oldx - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...