./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2c9fbf45-12b0-424f-b69b-c84a770112b8/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2c9fbf45-12b0-424f-b69b-c84a770112b8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2c9fbf45-12b0-424f-b69b-c84a770112b8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2c9fbf45-12b0-424f-b69b-c84a770112b8/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2c9fbf45-12b0-424f-b69b-c84a770112b8/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2c9fbf45-12b0-424f-b69b-c84a770112b8/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 41d35d9d9785c70c81ceac96efa22b5a4097e6f4 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:44:24,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:44:24,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:44:24,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:44:24,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:44:24,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:44:24,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:44:24,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:44:24,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:44:24,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:44:24,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:44:24,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:44:24,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:44:24,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:44:24,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:44:24,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:44:24,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:44:24,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:44:24,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:44:24,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:44:24,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:44:24,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:44:24,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:44:24,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:44:24,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:44:24,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:44:24,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:44:24,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:44:24,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:44:24,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:44:24,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:44:24,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:44:24,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:44:24,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:44:24,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:44:24,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:44:24,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:44:24,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:44:24,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:44:24,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:44:24,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:44:24,548 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2c9fbf45-12b0-424f-b69b-c84a770112b8/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-12-01 15:44:24,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:44:24,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:44:24,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:44:24,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:44:24,605 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:44:24,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:44:24,606 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 15:44:24,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:44:24,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:44:24,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:44:24,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:44:24,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:44:24,610 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-01 15:44:24,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:44:24,610 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:44:24,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:44:24,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:44:24,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:44:24,612 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:44:24,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:44:24,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:44:24,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:44:24,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:44:24,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:44:24,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:44:24,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:44:24,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:44:24,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:44:24,616 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_2c9fbf45-12b0-424f-b69b-c84a770112b8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2c9fbf45-12b0-424f-b69b-c84a770112b8/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41d35d9d9785c70c81ceac96efa22b5a4097e6f4 [2020-12-01 15:44:25,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:44:25,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:44:25,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:44:25,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:44:25,089 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:44:25,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2c9fbf45-12b0-424f-b69b-c84a770112b8/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c [2020-12-01 15:44:25,200 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2c9fbf45-12b0-424f-b69b-c84a770112b8/bin/uautomizer/data/975041743/8ac99b99937542308a57be4b25c17a82/FLAG18fa00e47 [2020-12-01 15:44:25,741 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:44:25,741 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2c9fbf45-12b0-424f-b69b-c84a770112b8/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c [2020-12-01 15:44:25,759 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2c9fbf45-12b0-424f-b69b-c84a770112b8/bin/uautomizer/data/975041743/8ac99b99937542308a57be4b25c17a82/FLAG18fa00e47 [2020-12-01 15:44:26,102 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2c9fbf45-12b0-424f-b69b-c84a770112b8/bin/uautomizer/data/975041743/8ac99b99937542308a57be4b25c17a82 [2020-12-01 15:44:26,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:44:26,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:44:26,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:44:26,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:44:26,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:44:26,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:44:26" (1/1) ... [2020-12-01 15:44:26,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d6cf61d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:26, skipping insertion in model container [2020-12-01 15:44:26,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:44:26" (1/1) ... [2020-12-01 15:44:26,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:44:26,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:44:26,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:44:26,425 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:44:26,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:44:26,485 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:44:26,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:26 WrapperNode [2020-12-01 15:44:26,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:44:26,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:44:26,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:44:26,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:44:26,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:26" (1/1) ... [2020-12-01 15:44:26,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:26" (1/1) ... [2020-12-01 15:44:26,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:44:26,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:44:26,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:44:26,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:44:26,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:26" (1/1) ... [2020-12-01 15:44:26,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:26" (1/1) ... [2020-12-01 15:44:26,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:26" (1/1) ... [2020-12-01 15:44:26,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:26" (1/1) ... [2020-12-01 15:44:26,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:26" (1/1) ... [2020-12-01 15:44:26,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:26" (1/1) ... [2020-12-01 15:44:26,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:26" (1/1) ... [2020-12-01 15:44:26,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:44:26,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:44:26,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:44:26,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:44:26,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2c9fbf45-12b0-424f-b69b-c84a770112b8/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 [2020-12-01 15:44:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:44:26,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:44:27,039 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:44:27,040 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-01 15:44:27,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:44:27 BoogieIcfgContainer [2020-12-01 15:44:27,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:44:27,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:44:27,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:44:27,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:44:27,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:44:26" (1/3) ... [2020-12-01 15:44:27,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173f9e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:44:27, skipping insertion in model container [2020-12-01 15:44:27,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:26" (2/3) ... [2020-12-01 15:44:27,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173f9e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:44:27, skipping insertion in model container [2020-12-01 15:44:27,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:44:27" (3/3) ... [2020-12-01 15:44:27,057 INFO L111 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig7b.c [2020-12-01 15:44:27,077 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:44:27,082 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-01 15:44:27,097 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-01 15:44:27,147 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:44:27,148 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:44:27,148 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:44:27,148 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:44:27,149 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:44:27,149 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:44:27,149 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:44:27,149 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:44:27,171 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-01 15:44:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-01 15:44:27,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:44:27,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-01 15:44:27,184 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:44:27,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:27,193 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2020-12-01 15:44:27,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:27,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518821415] [2020-12-01 15:44:27,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:44:27,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518821415] [2020-12-01 15:44:27,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:44:27,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-01 15:44:27,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361129103] [2020-12-01 15:44:27,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:44:27,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:44:27,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:44:27,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:44:27,512 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-12-01 15:44:27,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:44:27,556 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-12-01 15:44:27,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:44:27,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-01 15:44:27,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:44:27,578 INFO L225 Difference]: With dead ends: 24 [2020-12-01 15:44:27,595 INFO L226 Difference]: Without dead ends: 15 [2020-12-01 15:44:27,598 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 [2020-12-01 15:44:27,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-01 15:44:27,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-01 15:44:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-01 15:44:27,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-12-01 15:44:27,675 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 4 [2020-12-01 15:44:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:44:27,699 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-12-01 15:44:27,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:44:27,700 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-12-01 15:44:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 15:44:27,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:44:27,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-01 15:44:27,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:44:27,702 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:44:27,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:27,719 INFO L82 PathProgramCache]: Analyzing trace with hash 29869546, now seen corresponding path program 1 times [2020-12-01 15:44:27,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:27,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954126309] [2020-12-01 15:44:27,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:44:27,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954126309] [2020-12-01 15:44:27,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:44:27,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-01 15:44:27,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092193438] [2020-12-01 15:44:27,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:44:27,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:44:27,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:44:27,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:44:27,796 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-12-01 15:44:27,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:44:27,841 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-12-01 15:44:27,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:44:27,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-01 15:44:27,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:44:27,843 INFO L225 Difference]: With dead ends: 15 [2020-12-01 15:44:27,844 INFO L226 Difference]: Without dead ends: 14 [2020-12-01 15:44:27,845 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 [2020-12-01 15:44:27,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-01 15:44:27,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-01 15:44:27,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-01 15:44:27,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-12-01 15:44:27,850 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2020-12-01 15:44:27,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:44:27,850 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-12-01 15:44:27,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:44:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-01 15:44:27,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 15:44:27,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:44:27,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-01 15:44:27,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:44:27,853 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:44:27,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:27,859 INFO L82 PathProgramCache]: Analyzing trace with hash 29869738, now seen corresponding path program 1 times [2020-12-01 15:44:27,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:27,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123927250] [2020-12-01 15:44:27,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:44:27,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123927250] [2020-12-01 15:44:27,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:44:27,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-01 15:44:27,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876039963] [2020-12-01 15:44:27,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:44:27,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:44:27,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:44:27,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:44:27,933 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2020-12-01 15:44:27,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:44:27,971 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-12-01 15:44:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:44:27,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-01 15:44:27,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:44:27,973 INFO L225 Difference]: With dead ends: 14 [2020-12-01 15:44:27,973 INFO L226 Difference]: Without dead ends: 13 [2020-12-01 15:44:27,974 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 [2020-12-01 15:44:27,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-01 15:44:27,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-01 15:44:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-01 15:44:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-12-01 15:44:27,978 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 5 [2020-12-01 15:44:27,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:44:27,979 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-12-01 15:44:27,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:44:27,979 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-12-01 15:44:27,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 15:44:27,980 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:44:27,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-01 15:44:27,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:44:27,981 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:44:27,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:27,982 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2020-12-01 15:44:27,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:27,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163333787] [2020-12-01 15:44:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:44:28,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163333787] [2020-12-01 15:44:28,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:44:28,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:44:28,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946706898] [2020-12-01 15:44:28,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:44:28,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:44:28,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:44:28,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:44:28,063 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2020-12-01 15:44:28,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:44:28,096 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-12-01 15:44:28,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:44:28,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-01 15:44:28,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:44:28,098 INFO L225 Difference]: With dead ends: 14 [2020-12-01 15:44:28,098 INFO L226 Difference]: Without dead ends: 13 [2020-12-01 15:44:28,099 INFO L677 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 [2020-12-01 15:44:28,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-01 15:44:28,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-12-01 15:44:28,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-01 15:44:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-12-01 15:44:28,110 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2020-12-01 15:44:28,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:44:28,110 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-12-01 15:44:28,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:44:28,111 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-12-01 15:44:28,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 15:44:28,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:44:28,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-01 15:44:28,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:44:28,113 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:44:28,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:28,118 INFO L82 PathProgramCache]: Analyzing trace with hash 925955982, now seen corresponding path program 1 times [2020-12-01 15:44:28,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:28,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253411985] [2020-12-01 15:44:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:44:28,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253411985] [2020-12-01 15:44:28,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:44:28,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:44:28,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176877534] [2020-12-01 15:44:28,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:44:28,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:44:28,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:44:28,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:44:28,190 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 3 states. [2020-12-01 15:44:28,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:44:28,222 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-12-01 15:44:28,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:44:28,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-01 15:44:28,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:44:28,224 INFO L225 Difference]: With dead ends: 13 [2020-12-01 15:44:28,225 INFO L226 Difference]: Without dead ends: 12 [2020-12-01 15:44:28,226 INFO L677 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 [2020-12-01 15:44:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-01 15:44:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-12-01 15:44:28,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-01 15:44:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-12-01 15:44:28,235 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 6 [2020-12-01 15:44:28,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:44:28,236 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-12-01 15:44:28,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:44:28,237 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-12-01 15:44:28,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 15:44:28,240 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:44:28,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-01 15:44:28,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:44:28,241 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-01 15:44:28,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:28,243 INFO L82 PathProgramCache]: Analyzing trace with hash 925961940, now seen corresponding path program 1 times [2020-12-01 15:44:28,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:28,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592603067] [2020-12-01 15:44:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:44:28,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592603067] [2020-12-01 15:44:28,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:44:28,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:44:28,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509621532] [2020-12-01 15:44:28,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:44:28,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:44:28,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:44:28,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:44:28,320 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 3 states. [2020-12-01 15:44:28,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:44:28,348 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2020-12-01 15:44:28,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:44:28,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-01 15:44:28,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:44:28,349 INFO L225 Difference]: With dead ends: 12 [2020-12-01 15:44:28,350 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:44:28,350 INFO L677 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 [2020-12-01 15:44:28,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:44:28,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:44:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:44:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:44:28,351 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-12-01 15:44:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:44:28,352 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:44:28,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:44:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:44:28,352 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:44:28,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:44:28,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:44:28,470 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-01 15:44:28,470 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:44:28,471 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-12-01 15:44:28,492 INFO L258 CegarLoopResult]: At program point L31(lines 15 32) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-12-01 15:44:28,493 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2020-12-01 15:44:28,493 INFO L262 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-12-01 15:44:28,493 INFO L262 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-12-01 15:44:28,493 INFO L262 CegarLoopResult]: For program point L23(lines 23 29) no Hoare annotation was computed. [2020-12-01 15:44:28,493 INFO L262 CegarLoopResult]: For program point L21(lines 21 29) no Hoare annotation was computed. [2020-12-01 15:44:28,493 INFO L258 CegarLoopResult]: At program point L23-2(lines 20 30) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= ULTIMATE.start_main_~z~0 2147483647) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-12-01 15:44:28,494 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-01 15:44:28,494 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-12-01 15:44:28,494 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:44:28,494 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2020-12-01 15:44:28,494 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:44:28,494 INFO L262 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-12-01 15:44:28,495 INFO L262 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-12-01 15:44:28,495 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-12-01 15:44:28,495 INFO L262 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-12-01 15:44:28,495 INFO L262 CegarLoopResult]: For program point L20-2(lines 20 30) no Hoare annotation was computed. [2020-12-01 15:44:28,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:44:28 BoogieIcfgContainer [2020-12-01 15:44:28,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:44:28,543 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:44:28,543 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:44:28,544 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:44:28,544 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:44:27" (3/4) ... [2020-12-01 15:44:28,548 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:44:28,561 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-01 15:44:28,561 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-01 15:44:28,610 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2c9fbf45-12b0-424f-b69b-c84a770112b8/bin/uautomizer/witness.graphml [2020-12-01 15:44:28,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:44:28,613 INFO L168 Benchmark]: Toolchain (without parser) took 2501.14 ms. Allocated memory was 79.7 MB in the beginning and 113.2 MB in the end (delta: 33.6 MB). Free memory was 47.0 MB in the beginning and 86.8 MB in the end (delta: -39.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:44:28,614 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 79.7 MB. Free memory was 53.4 MB in the beginning and 53.4 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:44:28,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.50 ms. Allocated memory was 79.7 MB in the beginning and 113.2 MB in the end (delta: 33.6 MB). Free memory was 46.6 MB in the beginning and 92.8 MB in the end (delta: -46.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:44:28,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.45 ms. Allocated memory is still 113.2 MB. Free memory was 92.8 MB in the beginning and 91.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:44:28,616 INFO L168 Benchmark]: Boogie Preprocessor took 42.91 ms. Allocated memory is still 113.2 MB. Free memory was 91.5 MB in the beginning and 90.5 MB in the end (delta: 981.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:44:28,617 INFO L168 Benchmark]: RCFGBuilder took 450.39 ms. Allocated memory is still 113.2 MB. Free memory was 90.5 MB in the beginning and 79.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:44:28,618 INFO L168 Benchmark]: TraceAbstraction took 1491.44 ms. Allocated memory is still 113.2 MB. Free memory was 79.5 MB in the beginning and 89.6 MB in the end (delta: -10.1 MB). Peak memory consumption was 45.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:44:28,619 INFO L168 Benchmark]: Witness Printer took 67.59 ms. Allocated memory is still 113.2 MB. Free memory was 89.6 MB in the beginning and 86.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:44:28,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 79.7 MB. Free memory was 53.4 MB in the beginning and 53.4 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.50 ms. Allocated memory was 79.7 MB in the beginning and 113.2 MB in the end (delta: 33.6 MB). Free memory was 46.6 MB in the beginning and 92.8 MB in the end (delta: -46.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.45 ms. Allocated memory is still 113.2 MB. Free memory was 92.8 MB in the beginning and 91.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.91 ms. Allocated memory is still 113.2 MB. Free memory was 91.5 MB in the beginning and 90.5 MB in the end (delta: 981.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 450.39 ms. Allocated memory is still 113.2 MB. Free memory was 90.5 MB in the beginning and 79.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1491.44 ms. Allocated memory is still 113.2 MB. Free memory was 79.5 MB in the beginning and 89.6 MB in the end (delta: -10.1 MB). Peak memory consumption was 45.6 MB. Max. memory is 16.1 GB. * Witness Printer took 67.59 ms. Allocated memory is still 113.2 MB. Free memory was 89.6 MB in the beginning and 86.8 MB in the end (delta: 2.8 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: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: 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 - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (x <= 2147483647 && z <= 2147483647) && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 56 SDslu, 0 SDs, 0 SdLazy, 30 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 84 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 293 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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...