./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/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 05602efd0716c9bc46b30aae12cb2e2448644d24 .......................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:07:44,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:07:44,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:07:44,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:07:44,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:07:44,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:07:44,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:07:44,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:07:44,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:07:44,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:07:44,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:07:44,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:07:44,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:07:44,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:07:44,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:07:44,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:07:44,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:07:44,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:07:44,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:07:44,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:07:44,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:07:44,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:07:44,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:07:44,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:07:44,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:07:44,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:07:44,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:07:44,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:07:44,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:07:44,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:07:44,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:07:44,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:07:44,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:07:44,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:07:44,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:07:44,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:07:44,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:07:44,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:07:44,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:07:44,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:07:44,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:07:44,765 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 03:07:44,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:07:44,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:07:44,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:07:44,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:07:44,807 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:07:44,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:07:44,807 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:07:44,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:07:44,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:07:44,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:07:44,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:07:44,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:07:44,809 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 03:07:44,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:07:44,810 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:07:44,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:07:44,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:07:44,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:07:44,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:07:44,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:07:44,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:07:44,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:07:44,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:07:44,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:07:44,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:07:44,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:07:44,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:07:44,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:07:44,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05602efd0716c9bc46b30aae12cb2e2448644d24 [2020-11-28 03:07:45,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:07:45,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:07:45,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:07:45,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:07:45,149 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:07:45,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01.c [2020-11-28 03:07:45,211 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/bin/uautomizer/data/11526e029/190eeeeeea234a4bb0c90e8b518910a3/FLAG636a79fa5 [2020-11-28 03:07:45,672 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:07:45,672 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01.c [2020-11-28 03:07:45,698 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/bin/uautomizer/data/11526e029/190eeeeeea234a4bb0c90e8b518910a3/FLAG636a79fa5 [2020-11-28 03:07:46,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/bin/uautomizer/data/11526e029/190eeeeeea234a4bb0c90e8b518910a3 [2020-11-28 03:07:46,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:07:46,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:07:46,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:46,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:07:46,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:07:46,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:46" (1/1) ... [2020-11-28 03:07:46,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2d9e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:46, skipping insertion in model container [2020-11-28 03:07:46,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:46" (1/1) ... [2020-11-28 03:07:46,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:07:46,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:07:46,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:46,239 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:07:46,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:46,278 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:07:46,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:46 WrapperNode [2020-11-28 03:07:46,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:46,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:46,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:07:46,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:07:46,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:46" (1/1) ... [2020-11-28 03:07:46,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:46" (1/1) ... [2020-11-28 03:07:46,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:46,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:07:46,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:07:46,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:07:46,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:46" (1/1) ... [2020-11-28 03:07:46,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:46" (1/1) ... [2020-11-28 03:07:46,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:46" (1/1) ... [2020-11-28 03:07:46,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:46" (1/1) ... [2020-11-28 03:07:46,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:46" (1/1) ... [2020-11-28 03:07:46,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:46" (1/1) ... [2020-11-28 03:07:46,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:46" (1/1) ... [2020-11-28 03:07:46,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:07:46,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:07:46,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:07:46,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:07:46,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/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 [2020-11-28 03:07:46,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:07:46,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:07:46,547 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:07:46,547 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:07:46,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:46 BoogieIcfgContainer [2020-11-28 03:07:46,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:07:46,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:07:46,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:07:46,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:07:46,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:07:46" (1/3) ... [2020-11-28 03:07:46,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e9c28d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:46, skipping insertion in model container [2020-11-28 03:07:46,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:46" (2/3) ... [2020-11-28 03:07:46,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e9c28d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:46, skipping insertion in model container [2020-11-28 03:07:46,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:46" (3/3) ... [2020-11-28 03:07:46,562 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex3.01.c [2020-11-28 03:07:46,574 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:07:46,578 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 03:07:46,594 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 03:07:46,633 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:07:46,633 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:07:46,634 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:07:46,634 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:07:46,634 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:07:46,634 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:07:46,634 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:07:46,634 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:07:46,648 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-28 03:07:46,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 03:07:46,654 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:46,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-28 03:07:46,656 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:07:46,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:46,665 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-11-28 03:07:46,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:46,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5346376] [2020-11-28 03:07:46,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:46,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5346376] [2020-11-28 03:07:46,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:46,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:07:46,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946458062] [2020-11-28 03:07:47,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:07:47,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:47,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:07:47,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:07:47,021 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-11-28 03:07:47,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:47,139 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-11-28 03:07:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:07:47,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-11-28 03:07:47,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:47,150 INFO L225 Difference]: With dead ends: 23 [2020-11-28 03:07:47,151 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 03:07:47,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:07:47,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 03:07:47,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 8. [2020-11-28 03:07:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 03:07:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-28 03:07:47,200 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2020-11-28 03:07:47,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:47,200 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-28 03:07:47,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:07:47,200 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-28 03:07:47,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 03:07:47,201 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:47,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 03:07:47,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:07:47,201 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:07:47,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:47,202 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-11-28 03:07:47,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:47,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328979822] [2020-11-28 03:07:47,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:47,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:47,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328979822] [2020-11-28 03:07:47,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:47,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 03:07:47,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082160277] [2020-11-28 03:07:47,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:07:47,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:47,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:07:47,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:07:47,262 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2020-11-28 03:07:47,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:47,286 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2020-11-28 03:07:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:07:47,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-28 03:07:47,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:47,288 INFO L225 Difference]: With dead ends: 8 [2020-11-28 03:07:47,288 INFO L226 Difference]: Without dead ends: 7 [2020-11-28 03:07:47,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:07:47,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-11-28 03:07:47,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-28 03:07:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:07:47,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-11-28 03:07:47,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2020-11-28 03:07:47,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:47,292 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-11-28 03:07:47,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:07:47,293 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-11-28 03:07:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:07:47,293 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:47,293 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-11-28 03:07:47,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:07:47,294 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:07:47,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:47,294 INFO L82 PathProgramCache]: Analyzing trace with hash 925739309, now seen corresponding path program 1 times [2020-11-28 03:07:47,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:47,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684413533] [2020-11-28 03:07:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:47,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684413533] [2020-11-28 03:07:47,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831283334] [2020-11-28 03:07:47,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:07:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:47,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:07:47,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:47,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:07:47,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-11-28 03:07:47,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256101711] [2020-11-28 03:07:47,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:07:47,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:47,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:07:47,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:07:47,502 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2020-11-28 03:07:47,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:47,554 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2020-11-28 03:07:47,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:07:47,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-28 03:07:47,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:47,555 INFO L225 Difference]: With dead ends: 7 [2020-11-28 03:07:47,555 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:07:47,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:07:47,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:07:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:07:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:07:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:07:47,556 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-11-28 03:07:47,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:47,557 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:07:47,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:07:47,557 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:07:47,557 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:07:47,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:07:47,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:07:47,786 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-11-28 03:07:47,786 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:07:47,787 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-11-28 03:07:47,787 INFO L277 CegarLoopResult]: At program point L31(lines 22 32) the Hoare annotation is: true [2020-11-28 03:07:47,787 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:07:47,787 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:07:47,787 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-11-28 03:07:47,787 INFO L274 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-11-28 03:07:47,788 INFO L270 CegarLoopResult]: At program point L27-2(lines 27 30) the Hoare annotation is: (and (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) (<= ULTIMATE.start_main_~z~0 2147483647) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-11-28 03:07:47,788 INFO L274 CegarLoopResult]: For program point L27-3(lines 27 30) no Hoare annotation was computed. [2020-11-28 03:07:47,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:07:47 BoogieIcfgContainer [2020-11-28 03:07:47,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:07:47,807 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:07:47,807 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:07:47,807 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:07:47,808 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:46" (3/4) ... [2020-11-28 03:07:47,810 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:07:47,820 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 03:07:47,821 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 03:07:47,853 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8c8d5997-e706-416a-aea5-2d8f14ef5be2/bin/uautomizer/witness.graphml [2020-11-28 03:07:47,854 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:07:47,860 INFO L168 Benchmark]: Toolchain (without parser) took 1796.06 ms. Allocated memory is still 98.6 MB. Free memory was 75.6 MB in the beginning and 63.7 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:47,860 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 62.7 MB in the beginning and 62.6 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:47,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.89 ms. Allocated memory is still 98.6 MB. Free memory was 75.4 MB in the beginning and 77.0 MB in the end (delta: -1.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:47,861 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.90 ms. Allocated memory is still 98.6 MB. Free memory was 77.0 MB in the beginning and 75.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:47,862 INFO L168 Benchmark]: Boogie Preprocessor took 16.64 ms. Allocated memory is still 98.6 MB. Free memory was 75.8 MB in the beginning and 75.0 MB in the end (delta: 789.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:47,862 INFO L168 Benchmark]: RCFGBuilder took 206.90 ms. Allocated memory is still 98.6 MB. Free memory was 75.0 MB in the beginning and 66.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:47,863 INFO L168 Benchmark]: TraceAbstraction took 1255.75 ms. Allocated memory is still 98.6 MB. Free memory was 66.1 MB in the beginning and 65.8 MB in the end (delta: 247.1 kB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:47,863 INFO L168 Benchmark]: Witness Printer took 46.80 ms. Allocated memory is still 98.6 MB. Free memory was 65.8 MB in the beginning and 63.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:47,866 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 62.7 MB in the beginning and 62.6 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 218.89 ms. Allocated memory is still 98.6 MB. Free memory was 75.4 MB in the beginning and 77.0 MB in the end (delta: -1.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.90 ms. Allocated memory is still 98.6 MB. Free memory was 77.0 MB in the beginning and 75.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.64 ms. Allocated memory is still 98.6 MB. Free memory was 75.8 MB in the beginning and 75.0 MB in the end (delta: 789.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 206.90 ms. Allocated memory is still 98.6 MB. Free memory was 75.0 MB in the beginning and 66.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1255.75 ms. Allocated memory is still 98.6 MB. Free memory was 66.1 MB in the beginning and 65.8 MB in the end (delta: 247.1 kB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. * Witness Printer took 46.80 ms. Allocated memory is still 98.6 MB. Free memory was 65.8 MB in the beginning and 63.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (0 <= x + 2147483648 && z <= 2147483647) && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 14 SDslu, 8 SDs, 0 SdLazy, 23 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 207 SizeOfPredicates, 2 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...