./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.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 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e96b94a6-ee72-4344-9c64-45a174ddf7af/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e96b94a6-ee72-4344-9c64-45a174ddf7af/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e96b94a6-ee72-4344-9c64-45a174ddf7af/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e96b94a6-ee72-4344-9c64-45a174ddf7af/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e96b94a6-ee72-4344-9c64-45a174ddf7af/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e96b94a6-ee72-4344-9c64-45a174ddf7af/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 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 0.1.23-1dbac8b [2018-10-27 05:43:37,373 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:43:37,375 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:43:37,386 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:43:37,386 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:43:37,387 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:43:37,388 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:43:37,389 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:43:37,391 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:43:37,391 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:43:37,392 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:43:37,392 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:43:37,393 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:43:37,394 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:43:37,395 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:43:37,396 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:43:37,396 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:43:37,398 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:43:37,399 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:43:37,401 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:43:37,402 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:43:37,403 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:43:37,405 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:43:37,405 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:43:37,405 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:43:37,406 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:43:37,407 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:43:37,408 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:43:37,408 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:43:37,409 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:43:37,410 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:43:37,410 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:43:37,410 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:43:37,411 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:43:37,411 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:43:37,412 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:43:37,412 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e96b94a6-ee72-4344-9c64-45a174ddf7af/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-10-27 05:43:37,425 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:43:37,426 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:43:37,426 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:43:37,426 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-27 05:43:37,427 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 05:43:37,427 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 05:43:37,427 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 05:43:37,428 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:43:37,428 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 05:43:37,428 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:43:37,428 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:43:37,428 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:43:37,428 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:43:37,429 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:43:37,429 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-10-27 05:43:37,429 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:43:37,429 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:43:37,429 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:43:37,429 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:43:37,430 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:43:37,430 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:43:37,430 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:43:37,430 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:43:37,430 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:43:37,430 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:43:37,431 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 05:43:37,431 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:43:37,431 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:43:37,431 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_e96b94a6-ee72-4344-9c64-45a174ddf7af/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 -> 9f46c7b2b1e4ea0f04ba596f18cee8c318356c44 [2018-10-27 05:43:37,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:43:37,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:43:37,494 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:43:37,496 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:43:37,497 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:43:37,498 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e96b94a6-ee72-4344-9c64-45a174ddf7af/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03_false-no-overflow.c [2018-10-27 05:43:37,553 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e96b94a6-ee72-4344-9c64-45a174ddf7af/bin-2019/uautomizer/data/a9a4ae93d/bf24e1d0c56749ac872d37c61f8f0eb0/FLAGacb2c53b0 [2018-10-27 05:43:37,933 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:43:37,933 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e96b94a6-ee72-4344-9c64-45a174ddf7af/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03_false-no-overflow.c [2018-10-27 05:43:37,939 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e96b94a6-ee72-4344-9c64-45a174ddf7af/bin-2019/uautomizer/data/a9a4ae93d/bf24e1d0c56749ac872d37c61f8f0eb0/FLAGacb2c53b0 [2018-10-27 05:43:37,952 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e96b94a6-ee72-4344-9c64-45a174ddf7af/bin-2019/uautomizer/data/a9a4ae93d/bf24e1d0c56749ac872d37c61f8f0eb0 [2018-10-27 05:43:37,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:43:37,956 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:43:37,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:43:37,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:43:37,968 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:43:37,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:37" (1/1) ... [2018-10-27 05:43:37,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f041c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:37, skipping insertion in model container [2018-10-27 05:43:37,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:37" (1/1) ... [2018-10-27 05:43:37,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:43:37,999 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:43:38,124 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:43:38,126 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:43:38,138 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:43:38,150 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:43:38,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:38 WrapperNode [2018-10-27 05:43:38,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:43:38,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:43:38,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:43:38,151 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:43:38,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:38" (1/1) ... [2018-10-27 05:43:38,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:38" (1/1) ... [2018-10-27 05:43:38,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:38" (1/1) ... [2018-10-27 05:43:38,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:38" (1/1) ... [2018-10-27 05:43:38,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:38" (1/1) ... [2018-10-27 05:43:38,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:38" (1/1) ... [2018-10-27 05:43:38,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:38" (1/1) ... [2018-10-27 05:43:38,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:43:38,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:43:38,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:43:38,178 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:43:38,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e96b94a6-ee72-4344-9c64-45a174ddf7af/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 [2018-10-27 05:43:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:43:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:43:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:43:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-10-27 05:43:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:43:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:43:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:43:38,604 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:43:38,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:38 BoogieIcfgContainer [2018-10-27 05:43:38,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:43:38,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:43:38,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:43:38,609 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:43:38,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:43:37" (1/3) ... [2018-10-27 05:43:38,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7babae5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:38, skipping insertion in model container [2018-10-27 05:43:38,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:38" (2/3) ... [2018-10-27 05:43:38,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7babae5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:38, skipping insertion in model container [2018-10-27 05:43:38,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:38" (3/3) ... [2018-10-27 05:43:38,613 INFO L112 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex1.03_false-no-overflow.c [2018-10-27 05:43:38,622 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:43:38,630 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-10-27 05:43:38,654 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-10-27 05:43:38,705 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 05:43:38,706 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:43:38,706 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:43:38,706 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:43:38,706 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:43:38,707 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:43:38,707 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:43:38,707 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:43:38,707 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:43:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-10-27 05:43:38,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-27 05:43:38,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:38,766 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:38,768 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:38,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:38,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1108975868, now seen corresponding path program 1 times [2018-10-27 05:43:38,778 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:43:38,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:43:38,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:38,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:38,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:39,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:39,018 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:39,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:43:39,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:43:39,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:43:39,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:43:39,032 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2018-10-27 05:43:39,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:39,117 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-10-27 05:43:39,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:43:39,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-10-27 05:43:39,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:39,125 INFO L225 Difference]: With dead ends: 27 [2018-10-27 05:43:39,125 INFO L226 Difference]: Without dead ends: 13 [2018-10-27 05:43:39,129 INFO L605 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 [2018-10-27 05:43:39,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-27 05:43:39,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-10-27 05:43:39,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-27 05:43:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-10-27 05:43:39,159 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2018-10-27 05:43:39,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:39,159 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-10-27 05:43:39,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:43:39,160 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2018-10-27 05:43:39,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 05:43:39,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:39,160 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:39,161 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:39,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:39,161 INFO L82 PathProgramCache]: Analyzing trace with hash -18513493, now seen corresponding path program 1 times [2018-10-27 05:43:39,163 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 05:43:39,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 05:43:39,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:39,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:39,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 05:43:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 05:43:39,193 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 05:43:39,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:43:39 BoogieIcfgContainer [2018-10-27 05:43:39,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:43:39,213 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 05:43:39,213 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 05:43:39,214 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 05:43:39,215 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:38" (3/4) ... [2018-10-27 05:43:39,217 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-27 05:43:39,253 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e96b94a6-ee72-4344-9c64-45a174ddf7af/bin-2019/uautomizer/witness.graphml [2018-10-27 05:43:39,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 05:43:39,254 INFO L168 Benchmark]: Toolchain (without parser) took 1298.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 955.8 MB in the beginning and 1.1 GB in the end (delta: -157.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:43:39,255 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:43:39,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.66 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:39,257 INFO L168 Benchmark]: Boogie Preprocessor took 26.01 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:43:39,257 INFO L168 Benchmark]: RCFGBuilder took 427.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -199.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:39,259 INFO L168 Benchmark]: TraceAbstraction took 607.24 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: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:39,260 INFO L168 Benchmark]: Witness Printer took 40.11 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. [2018-10-27 05:43:39,263 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 193.66 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.01 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 427.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -199.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 607.24 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: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. * Witness Printer took 40.11 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: 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=0, x=1073741826, x > 1 && -2*x == oldx=1] [L26] -2*x VAL [x=0, x=1073741826, x > 1 && -2*x == oldx=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 2 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15 SDtfs, 14 SDslu, 10 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=18occurred 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, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 120 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...