./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/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 7c08193784b646afd298f73ae6296b7af2e0cac1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 12:18:58,021 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:18:58,023 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:18:58,029 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:18:58,030 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:18:58,030 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:18:58,031 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:18:58,032 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:18:58,033 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:18:58,034 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:18:58,035 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:18:58,035 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:18:58,036 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:18:58,036 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:18:58,037 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:18:58,038 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:18:58,038 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:18:58,040 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:18:58,041 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:18:58,042 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:18:58,043 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:18:58,044 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:18:58,046 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:18:58,046 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:18:58,046 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:18:58,047 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:18:58,048 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:18:58,048 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:18:58,049 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:18:58,050 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:18:58,050 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:18:58,050 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:18:58,050 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:18:58,051 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:18:58,051 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:18:58,052 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:18:58,052 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-18 12:18:58,063 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:18:58,063 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:18:58,063 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:18:58,064 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 12:18:58,064 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 12:18:58,064 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 12:18:58,064 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 12:18:58,065 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:18:58,065 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 12:18:58,065 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:18:58,065 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:18:58,065 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:18:58,065 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:18:58,066 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:18:58,066 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 12:18:58,066 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:18:58,066 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:18:58,066 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:18:58,066 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:18:58,066 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:18:58,067 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:18:58,067 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:18:58,067 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:18:58,067 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:18:58,067 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:18:58,067 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:18:58,067 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 12:18:58,068 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:18:58,068 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:18:58,068 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_9278ec07-4fe6-4a68-b497-741d8226e45a/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 -> 7c08193784b646afd298f73ae6296b7af2e0cac1 [2018-11-18 12:18:58,090 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:18:58,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:18:58,101 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:18:58,102 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:18:58,102 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:18:58,103 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c [2018-11-18 12:18:58,142 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/bin-2019/uautomizer/data/940076ef1/9ec16d18ea924619bf0b9ca5d10c9ccd/FLAGd28ff9e58 [2018-11-18 12:18:58,540 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:18:58,540 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c [2018-11-18 12:18:58,544 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/bin-2019/uautomizer/data/940076ef1/9ec16d18ea924619bf0b9ca5d10c9ccd/FLAGd28ff9e58 [2018-11-18 12:18:58,553 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/bin-2019/uautomizer/data/940076ef1/9ec16d18ea924619bf0b9ca5d10c9ccd [2018-11-18 12:18:58,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:18:58,555 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 12:18:58,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:18:58,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:18:58,558 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:18:58,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:18:58" (1/1) ... [2018-11-18 12:18:58,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da0b297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:18:58, skipping insertion in model container [2018-11-18 12:18:58,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:18:58" (1/1) ... [2018-11-18 12:18:58,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:18:58,577 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:18:58,681 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:18:58,683 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:18:58,692 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:18:58,699 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:18:58,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:18:58 WrapperNode [2018-11-18 12:18:58,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:18:58,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:18:58,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:18:58,700 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:18:58,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:18:58" (1/1) ... [2018-11-18 12:18:58,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:18:58" (1/1) ... [2018-11-18 12:18:58,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:18:58" (1/1) ... [2018-11-18 12:18:58,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:18:58" (1/1) ... [2018-11-18 12:18:58,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:18:58" (1/1) ... [2018-11-18 12:18:58,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:18:58" (1/1) ... [2018-11-18 12:18:58,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:18:58" (1/1) ... [2018-11-18 12:18:58,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:18:58,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:18:58,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:18:58,717 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:18:58,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:18:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/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 [2018-11-18 12:18:58,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:18:58,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:18:58,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:18:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 12:18:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:18:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:18:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:18:58,885 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:18:58,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:18:58 BoogieIcfgContainer [2018-11-18 12:18:58,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:18:58,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:18:58,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:18:58,889 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:18:58,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:18:58" (1/3) ... [2018-11-18 12:18:58,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cbb6db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:18:58, skipping insertion in model container [2018-11-18 12:18:58,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:18:58" (2/3) ... [2018-11-18 12:18:58,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cbb6db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:18:58, skipping insertion in model container [2018-11-18 12:18:58,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:18:58" (3/3) ... [2018-11-18 12:18:58,891 INFO L112 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig1_true-termination_true-no-overflow.c [2018-11-18 12:18:58,897 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:18:58,901 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-18 12:18:58,910 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-18 12:18:58,927 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:18:58,927 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:18:58,928 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:18:58,928 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:18:58,928 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:18:58,928 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:18:58,928 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:18:58,928 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:18:58,928 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:18:58,938 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-18 12:18:58,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 12:18:58,941 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:18:58,942 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:18:58,943 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:18:58,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:18:58,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1432253197, now seen corresponding path program 1 times [2018-11-18 12:18:58,947 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:18:58,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:18:58,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:18:58,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:18:58,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:18:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:18:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:18:59,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:18:59,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:18:59,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:18:59,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:18:59,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:18:59,039 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-11-18 12:18:59,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:18:59,051 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2018-11-18 12:18:59,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:18:59,052 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-11-18 12:18:59,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:18:59,059 INFO L225 Difference]: With dead ends: 39 [2018-11-18 12:18:59,059 INFO L226 Difference]: Without dead ends: 17 [2018-11-18 12:18:59,061 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:18:59,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-18 12:18:59,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-18 12:18:59,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 12:18:59,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-18 12:18:59,084 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2018-11-18 12:18:59,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:18:59,084 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-18 12:18:59,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:18:59,084 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-18 12:18:59,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 12:18:59,084 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:18:59,085 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:18:59,085 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:18:59,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:18:59,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1450187957, now seen corresponding path program 1 times [2018-11-18 12:18:59,085 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:18:59,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:18:59,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:18:59,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:18:59,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:18:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:18:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:18:59,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:18:59,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:18:59,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:18:59,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:18:59,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:18:59,130 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2018-11-18 12:18:59,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:18:59,186 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2018-11-18 12:18:59,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 12:18:59,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-18 12:18:59,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:18:59,187 INFO L225 Difference]: With dead ends: 28 [2018-11-18 12:18:59,187 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 12:18:59,188 INFO L604 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 [2018-11-18 12:18:59,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 12:18:59,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2018-11-18 12:18:59,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 12:18:59,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-11-18 12:18:59,192 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 10 [2018-11-18 12:18:59,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:18:59,192 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-11-18 12:18:59,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:18:59,192 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-11-18 12:18:59,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 12:18:59,193 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:18:59,193 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:18:59,195 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:18:59,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:18:59,195 INFO L82 PathProgramCache]: Analyzing trace with hash -2006153642, now seen corresponding path program 1 times [2018-11-18 12:18:59,196 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:18:59,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:18:59,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:18:59,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:18:59,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:18:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:18:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:18:59,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:18:59,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:18:59,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:18:59,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:18:59,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:18:59,226 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 3 states. [2018-11-18 12:18:59,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:18:59,253 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-11-18 12:18:59,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:18:59,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 12:18:59,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:18:59,254 INFO L225 Difference]: With dead ends: 21 [2018-11-18 12:18:59,254 INFO L226 Difference]: Without dead ends: 20 [2018-11-18 12:18:59,254 INFO L604 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 [2018-11-18 12:18:59,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-18 12:18:59,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-18 12:18:59,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-18 12:18:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-11-18 12:18:59,257 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2018-11-18 12:18:59,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:18:59,257 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-11-18 12:18:59,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:18:59,258 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-11-18 12:18:59,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 12:18:59,258 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:18:59,258 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:18:59,258 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:18:59,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:18:59,259 INFO L82 PathProgramCache]: Analyzing trace with hash -2006151944, now seen corresponding path program 1 times [2018-11-18 12:18:59,259 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:18:59,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:18:59,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:18:59,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:18:59,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:18:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:18:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:18:59,278 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:18:59,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:18:59,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:18:59,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:18:59,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:18:59,279 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2018-11-18 12:18:59,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:18:59,293 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-11-18 12:18:59,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:18:59,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 12:18:59,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:18:59,295 INFO L225 Difference]: With dead ends: 22 [2018-11-18 12:18:59,295 INFO L226 Difference]: Without dead ends: 21 [2018-11-18 12:18:59,295 INFO L604 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 [2018-11-18 12:18:59,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-18 12:18:59,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-11-18 12:18:59,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 12:18:59,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-18 12:18:59,299 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2018-11-18 12:18:59,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:18:59,299 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-18 12:18:59,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:18:59,299 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-18 12:18:59,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 12:18:59,299 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:18:59,300 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:18:59,300 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:18:59,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:18:59,300 INFO L82 PathProgramCache]: Analyzing trace with hash -802592061, now seen corresponding path program 1 times [2018-11-18 12:18:59,300 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:18:59,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:18:59,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:18:59,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:18:59,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:18:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:18:59,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 12:18:59,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:18:59,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:18:59,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:18:59,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:18:59,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:18:59,330 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 4 states. [2018-11-18 12:18:59,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:18:59,362 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-11-18 12:18:59,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:18:59,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-18 12:18:59,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:18:59,363 INFO L225 Difference]: With dead ends: 19 [2018-11-18 12:18:59,364 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 12:18:59,364 INFO L604 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 [2018-11-18 12:18:59,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 12:18:59,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-11-18 12:18:59,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 12:18:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-11-18 12:18:59,367 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2018-11-18 12:18:59,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:18:59,368 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-11-18 12:18:59,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:18:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-11-18 12:18:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 12:18:59,368 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:18:59,368 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:18:59,369 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:18:59,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:18:59,369 INFO L82 PathProgramCache]: Analyzing trace with hash -802592006, now seen corresponding path program 1 times [2018-11-18 12:18:59,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:18:59,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:18:59,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:18:59,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:18:59,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:18:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:18:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:18:59,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:18:59,389 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 12:18:59,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:18:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:18:59,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:18:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:18:59,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:18:59,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-18 12:18:59,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:18:59,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:18:59,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:18:59,444 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 4 states. [2018-11-18 12:18:59,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:18:59,471 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-18 12:18:59,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:18:59,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-18 12:18:59,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:18:59,472 INFO L225 Difference]: With dead ends: 31 [2018-11-18 12:18:59,472 INFO L226 Difference]: Without dead ends: 30 [2018-11-18 12:18:59,472 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:18:59,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-18 12:18:59,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 21. [2018-11-18 12:18:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 12:18:59,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-11-18 12:18:59,475 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 14 [2018-11-18 12:18:59,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:18:59,476 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-11-18 12:18:59,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:18:59,476 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2018-11-18 12:18:59,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 12:18:59,476 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:18:59,476 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:18:59,477 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:18:59,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:18:59,477 INFO L82 PathProgramCache]: Analyzing trace with hash 2000844402, now seen corresponding path program 2 times [2018-11-18 12:18:59,477 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:18:59,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:18:59,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:18:59,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:18:59,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:18:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:18:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:18:59,505 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:18:59,505 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 12:18:59,514 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 12:18:59,521 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 12:18:59,521 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:18:59,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:18:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 12:18:59,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:18:59,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-11-18 12:18:59,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 12:18:59,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 12:18:59,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 12:18:59,595 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 8 states. [2018-11-18 12:18:59,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:18:59,726 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2018-11-18 12:18:59,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 12:18:59,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-11-18 12:18:59,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:18:59,727 INFO L225 Difference]: With dead ends: 44 [2018-11-18 12:18:59,727 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 12:18:59,727 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2018-11-18 12:18:59,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 12:18:59,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 12:18:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 12:18:59,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 12:18:59,728 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-11-18 12:18:59,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:18:59,728 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 12:18:59,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 12:18:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 12:18:59,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 12:18:59,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 12:18:59,769 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 12:18:59,769 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:18:59,769 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:18:59,769 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 12:18:59,769 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:18:59,769 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:18:59,769 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-18 12:18:59,770 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 12:18:59,770 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 14 27) no Hoare annotation was computed. [2018-11-18 12:18:59,770 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 23) no Hoare annotation was computed. [2018-11-18 12:18:59,770 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 25) no Hoare annotation was computed. [2018-11-18 12:18:59,770 INFO L421 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: (and (<= 0 main_~j~0) (<= main_~n~0 2147483647) (<= 0 (+ main_~i~0 2147483648)) (<= main_~i~0 2147483646)) [2018-11-18 12:18:59,770 INFO L425 ceAbstractionStarter]: For program point L21-4(lines 21 23) no Hoare annotation was computed. [2018-11-18 12:18:59,770 INFO L421 ceAbstractionStarter]: At program point L19-3(lines 19 25) the Hoare annotation is: (and (<= main_~n~0 2147483647) (<= 0 (+ main_~i~0 2147483648))) [2018-11-18 12:18:59,770 INFO L425 ceAbstractionStarter]: For program point L19-4(lines 19 25) no Hoare annotation was computed. [2018-11-18 12:18:59,770 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 14 27) no Hoare annotation was computed. [2018-11-18 12:18:59,770 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-18 12:18:59,770 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 12:18:59,771 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 14 27) the Hoare annotation is: true [2018-11-18 12:18:59,771 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-18 12:18:59,771 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-18 12:18:59,771 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-18 12:18:59,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:18:59 BoogieIcfgContainer [2018-11-18 12:18:59,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:18:59,782 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:18:59,782 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:18:59,782 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:18:59,783 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:18:58" (3/4) ... [2018-11-18 12:18:59,785 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 12:18:59,789 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 12:18:59,790 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 12:18:59,793 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-18 12:18:59,793 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 12:18:59,793 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 12:18:59,824 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9278ec07-4fe6-4a68-b497-741d8226e45a/bin-2019/uautomizer/witness.graphml [2018-11-18 12:18:59,824 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:18:59,825 INFO L168 Benchmark]: Toolchain (without parser) took 1269.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 959.1 MB in the beginning and 1.0 GB in the end (delta: -83.9 MB). Peak memory consumption was 86.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:18:59,826 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:18:59,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 144.15 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:18:59,826 INFO L168 Benchmark]: Boogie Preprocessor took 16.19 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:18:59,826 INFO L168 Benchmark]: RCFGBuilder took 169.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -211.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2018-11-18 12:18:59,827 INFO L168 Benchmark]: TraceAbstraction took 895.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 111.1 MB). Peak memory consumption was 111.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:18:59,827 INFO L168 Benchmark]: Witness Printer took 41.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-18 12:18:59,829 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 144.15 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.19 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 169.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -211.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 895.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 111.1 MB). Peak memory consumption was 111.1 MB. Max. memory is 11.5 GB. * Witness Printer took 41.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((0 <= j && n <= 2147483647) && 0 <= i + 2147483648) && i <= 2147483646 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: n <= 2147483647 && 0 <= i + 2147483648 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 4 error locations. SAFE Result, 0.8s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 90 SDtfs, 96 SDslu, 90 SDs, 0 SdLazy, 96 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 7 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 16 NumberOfFragments, 28 HoareAnnotationTreeSize, 6 FomulaSimplifications, 417 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 119 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 3236 SizeOfPredicates, 2 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 10/28 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...