./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.09_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_563e997d-6407-458b-a1d4-c1e05650387b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_563e997d-6407-458b-a1d4-c1e05650387b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_563e997d-6407-458b-a1d4-c1e05650387b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_563e997d-6407-458b-a1d4-c1e05650387b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.09_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_563e997d-6407-458b-a1d4-c1e05650387b/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_563e997d-6407-458b-a1d4-c1e05650387b/bin-2019/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 84b0699039fdd709a3306cfa354f9fcc70db171e .......................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-11-10 07:12:25,345 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 07:12:25,346 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 07:12:25,353 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 07:12:25,353 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 07:12:25,354 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 07:12:25,354 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 07:12:25,355 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 07:12:25,356 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 07:12:25,357 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 07:12:25,358 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 07:12:25,358 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 07:12:25,359 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 07:12:25,359 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 07:12:25,360 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 07:12:25,360 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 07:12:25,361 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 07:12:25,362 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 07:12:25,363 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 07:12:25,364 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 07:12:25,365 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 07:12:25,366 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 07:12:25,368 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 07:12:25,368 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 07:12:25,368 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 07:12:25,369 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 07:12:25,369 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 07:12:25,370 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 07:12:25,370 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 07:12:25,371 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 07:12:25,371 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 07:12:25,372 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 07:12:25,372 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 07:12:25,372 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 07:12:25,373 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 07:12:25,373 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 07:12:25,373 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_563e997d-6407-458b-a1d4-c1e05650387b/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-10 07:12:25,383 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 07:12:25,384 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 07:12:25,384 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 07:12:25,384 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 07:12:25,385 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 07:12:25,385 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 07:12:25,385 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 07:12:25,385 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 07:12:25,386 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 07:12:25,386 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 07:12:25,386 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 07:12:25,386 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 07:12:25,386 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 07:12:25,386 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 07:12:25,386 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 07:12:25,387 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 07:12:25,387 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 07:12:25,387 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 07:12:25,387 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 07:12:25,387 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 07:12:25,387 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 07:12:25,387 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 07:12:25,388 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 07:12:25,388 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 07:12:25,388 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 07:12:25,388 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 07:12:25,388 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 07:12:25,388 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 07:12:25,388 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_563e997d-6407-458b-a1d4-c1e05650387b/bin-2019/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 -> 84b0699039fdd709a3306cfa354f9fcc70db171e [2018-11-10 07:12:25,412 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 07:12:25,420 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 07:12:25,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 07:12:25,423 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 07:12:25,423 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 07:12:25,424 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_563e997d-6407-458b-a1d4-c1e05650387b/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.09_false-no-overflow.c [2018-11-10 07:12:25,459 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_563e997d-6407-458b-a1d4-c1e05650387b/bin-2019/uautomizer/data/c65de220d/d81373c5367d45b3a3461cb7418057d4/FLAG047887e2d [2018-11-10 07:12:25,766 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 07:12:25,767 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_563e997d-6407-458b-a1d4-c1e05650387b/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.09_false-no-overflow.c [2018-11-10 07:12:25,771 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_563e997d-6407-458b-a1d4-c1e05650387b/bin-2019/uautomizer/data/c65de220d/d81373c5367d45b3a3461cb7418057d4/FLAG047887e2d [2018-11-10 07:12:25,782 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_563e997d-6407-458b-a1d4-c1e05650387b/bin-2019/uautomizer/data/c65de220d/d81373c5367d45b3a3461cb7418057d4 [2018-11-10 07:12:25,785 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 07:12:25,786 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 07:12:25,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 07:12:25,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 07:12:25,790 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 07:12:25,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:12:25" (1/1) ... [2018-11-10 07:12:25,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@372d3e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:12:25, skipping insertion in model container [2018-11-10 07:12:25,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:12:25" (1/1) ... [2018-11-10 07:12:25,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 07:12:25,814 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 07:12:25,910 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:12:25,913 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 07:12:25,922 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:12:25,930 INFO L193 MainTranslator]: Completed translation [2018-11-10 07:12:25,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:12:25 WrapperNode [2018-11-10 07:12:25,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 07:12:25,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 07:12:25,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 07:12:25,931 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 07:12:25,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:12:25" (1/1) ... [2018-11-10 07:12:25,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:12:25" (1/1) ... [2018-11-10 07:12:25,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:12:25" (1/1) ... [2018-11-10 07:12:25,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:12:25" (1/1) ... [2018-11-10 07:12:25,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:12:25" (1/1) ... [2018-11-10 07:12:25,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:12:25" (1/1) ... [2018-11-10 07:12:25,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:12:25" (1/1) ... [2018-11-10 07:12:25,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 07:12:25,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 07:12:25,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 07:12:25,953 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 07:12:25,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:12:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_563e997d-6407-458b-a1d4-c1e05650387b/bin-2019/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 [2018-11-10 07:12:26,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 07:12:26,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 07:12:26,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 07:12:26,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 07:12:26,023 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 07:12:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 07:12:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 07:12:26,134 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 07:12:26,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:12:26 BoogieIcfgContainer [2018-11-10 07:12:26,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 07:12:26,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 07:12:26,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 07:12:26,137 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 07:12:26,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 07:12:25" (1/3) ... [2018-11-10 07:12:26,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544d9658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:12:26, skipping insertion in model container [2018-11-10 07:12:26,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:12:25" (2/3) ... [2018-11-10 07:12:26,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544d9658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:12:26, skipping insertion in model container [2018-11-10 07:12:26,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:12:26" (3/3) ... [2018-11-10 07:12:26,140 INFO L112 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.09_false-no-overflow.c [2018-11-10 07:12:26,145 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 07:12:26,149 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-11-10 07:12:26,158 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-11-10 07:12:26,181 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 07:12:26,181 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 07:12:26,181 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 07:12:26,181 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 07:12:26,181 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 07:12:26,181 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 07:12:26,182 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 07:12:26,182 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 07:12:26,182 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 07:12:26,193 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-10 07:12:26,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-10 07:12:26,197 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:12:26,197 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:12:26,199 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:12:26,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:12:26,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1898675139, now seen corresponding path program 1 times [2018-11-10 07:12:26,204 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:12:26,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:12:26,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:12:26,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:12:26,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:12:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:12:26,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:12:26,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:12:26,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 07:12:26,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 07:12:26,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 07:12:26,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 07:12:26,327 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2018-11-10 07:12:26,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:12:26,373 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-11-10 07:12:26,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 07:12:26,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-10 07:12:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:12:26,383 INFO L225 Difference]: With dead ends: 33 [2018-11-10 07:12:26,383 INFO L226 Difference]: Without dead ends: 22 [2018-11-10 07:12:26,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 07:12:26,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-10 07:12:26,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-10 07:12:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-10 07:12:26,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-10 07:12:26,411 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 8 [2018-11-10 07:12:26,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:12:26,411 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-10 07:12:26,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 07:12:26,412 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-10 07:12:26,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 07:12:26,412 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:12:26,412 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:12:26,412 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:12:26,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:12:26,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1270612787, now seen corresponding path program 1 times [2018-11-10 07:12:26,413 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:12:26,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:12:26,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:12:26,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:12:26,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:12:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:12:26,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:12:26,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:12:26,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 07:12:26,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 07:12:26,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 07:12:26,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 07:12:26,439 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 3 states. [2018-11-10 07:12:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:12:26,496 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-11-10 07:12:26,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 07:12:26,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-10 07:12:26,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:12:26,497 INFO L225 Difference]: With dead ends: 35 [2018-11-10 07:12:26,497 INFO L226 Difference]: Without dead ends: 34 [2018-11-10 07:12:26,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 07:12:26,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-10 07:12:26,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2018-11-10 07:12:26,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-10 07:12:26,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-11-10 07:12:26,501 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 9 [2018-11-10 07:12:26,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:12:26,502 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-11-10 07:12:26,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 07:12:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-10 07:12:26,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 07:12:26,502 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:12:26,502 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:12:26,502 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:12:26,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:12:26,503 INFO L82 PathProgramCache]: Analyzing trace with hash -734290683, now seen corresponding path program 1 times [2018-11-10 07:12:26,503 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:12:26,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:12:26,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:12:26,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:12:26,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:12:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:12:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:12:26,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:12:26,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 07:12:26,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 07:12:26,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 07:12:26,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 07:12:26,543 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 4 states. [2018-11-10 07:12:26,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:12:26,624 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-11-10 07:12:26,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 07:12:26,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-10 07:12:26,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:12:26,625 INFO L225 Difference]: With dead ends: 36 [2018-11-10 07:12:26,625 INFO L226 Difference]: Without dead ends: 34 [2018-11-10 07:12:26,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 07:12:26,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-10 07:12:26,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2018-11-10 07:12:26,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-10 07:12:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-11-10 07:12:26,630 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 10 [2018-11-10 07:12:26,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:12:26,630 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-11-10 07:12:26,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 07:12:26,631 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-11-10 07:12:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 07:12:26,631 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:12:26,631 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:12:26,631 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:12:26,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:12:26,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1288174641, now seen corresponding path program 1 times [2018-11-10 07:12:26,632 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:12:26,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:12:26,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:12:26,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:12:26,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:12:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:12:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:12:26,660 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 07:12:26,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 07:12:26 BoogieIcfgContainer [2018-11-10 07:12:26,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 07:12:26,676 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 07:12:26,676 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 07:12:26,676 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 07:12:26,677 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:12:26" (3/4) ... [2018-11-10 07:12:26,678 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 07:12:26,706 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_563e997d-6407-458b-a1d4-c1e05650387b/bin-2019/uautomizer/witness.graphml [2018-11-10 07:12:26,706 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 07:12:26,707 INFO L168 Benchmark]: Toolchain (without parser) took 921.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -117.2 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2018-11-10 07:12:26,708 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:12:26,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 144.31 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:12:26,709 INFO L168 Benchmark]: Boogie Preprocessor took 21.57 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:12:26,709 INFO L168 Benchmark]: RCFGBuilder took 181.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -177.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2018-11-10 07:12:26,710 INFO L168 Benchmark]: TraceAbstraction took 540.53 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: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 11.5 GB. [2018-11-10 07:12:26,710 INFO L168 Benchmark]: Witness Printer took 30.00 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. [2018-11-10 07:12:26,712 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 144.31 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.57 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 181.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -177.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 540.53 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: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 11.5 GB. * Witness Printer took 30.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y, n; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] n = __VERIFIER_nondet_int() [L27] COND TRUE x > 0 && x < n VAL [n=3, x=2, y=-2147483647] [L28] EXPR -x VAL [n=3, x=2, y=-2147483647] [L28] -x + y VAL [n=3, x=2, y=-2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 8 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 34 SDslu, 36 SDs, 0 SdLazy, 74 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, 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, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 416 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...