./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b6115be6-9940-4203-9ceb-a2fbef007350/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b6115be6-9940-4203-9ceb-a2fbef007350/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b6115be6-9940-4203-9ceb-a2fbef007350/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b6115be6-9940-4203-9ceb-a2fbef007350/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b6115be6-9940-4203-9ceb-a2fbef007350/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b6115be6-9940-4203-9ceb-a2fbef007350/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4c761fb15c9d367876fc9f1553874e9680fa1668 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:29:10,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:29:10,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:29:10,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:29:10,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:29:10,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:29:10,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:29:10,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:29:10,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:29:10,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:29:10,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:29:10,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:29:10,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:29:10,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:29:10,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:29:10,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:29:10,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:29:10,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:29:10,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:29:10,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:29:10,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:29:10,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:29:10,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:29:10,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:29:10,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:29:10,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:29:10,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:29:10,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:29:10,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:29:10,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:29:10,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:29:10,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:29:10,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:29:10,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:29:10,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:29:10,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:29:10,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:29:10,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:29:10,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:29:10,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:29:10,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:29:10,800 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b6115be6-9940-4203-9ceb-a2fbef007350/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-28 07:29:10,848 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:29:10,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:29:10,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:29:10,850 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:29:10,850 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:29:10,850 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:29:10,851 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:29:10,851 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:29:10,851 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:29:10,852 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:29:10,852 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:29:10,853 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:29:10,853 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:29:10,853 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:29:10,854 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:29:10,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:29:10,855 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:29:10,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:29:10,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:29:10,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:29:10,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:29:10,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:29:10,858 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:29:10,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:29:10,858 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:29:10,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:29:10,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:29:10,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:29:10,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:29:10,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:29:10,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:29:10,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:29:10,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:29:10,866 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:29:10,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:29:10,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:29:10,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:29:10,869 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:29:10,869 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b6115be6-9940-4203-9ceb-a2fbef007350/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b6115be6-9940-4203-9ceb-a2fbef007350/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c761fb15c9d367876fc9f1553874e9680fa1668 [2020-11-28 07:29:11,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:29:11,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:29:11,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:29:11,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:29:11,323 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:29:11,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b6115be6-9940-4203-9ceb-a2fbef007350/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c [2020-11-28 07:29:11,443 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6115be6-9940-4203-9ceb-a2fbef007350/bin/utaipan/data/7fda685b8/1fdd037da16e43a68a2f8d79d78c3677/FLAG8f21f5857 [2020-11-28 07:29:12,068 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:29:12,069 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b6115be6-9940-4203-9ceb-a2fbef007350/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c [2020-11-28 07:29:12,075 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6115be6-9940-4203-9ceb-a2fbef007350/bin/utaipan/data/7fda685b8/1fdd037da16e43a68a2f8d79d78c3677/FLAG8f21f5857 [2020-11-28 07:29:12,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b6115be6-9940-4203-9ceb-a2fbef007350/bin/utaipan/data/7fda685b8/1fdd037da16e43a68a2f8d79d78c3677 [2020-11-28 07:29:12,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:29:12,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:29:12,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:29:12,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:29:12,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:29:12,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:29:12" (1/1) ... [2020-11-28 07:29:12,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e02f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:12, skipping insertion in model container [2020-11-28 07:29:12,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:29:12" (1/1) ... [2020-11-28 07:29:12,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:29:12,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:29:12,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:29:12,638 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:29:12,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:29:12,688 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:29:12,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:12 WrapperNode [2020-11-28 07:29:12,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:29:12,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:29:12,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:29:12,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:29:12,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:12" (1/1) ... [2020-11-28 07:29:12,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:12" (1/1) ... [2020-11-28 07:29:12,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:29:12,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:29:12,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:29:12,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:29:12,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:12" (1/1) ... [2020-11-28 07:29:12,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:12" (1/1) ... [2020-11-28 07:29:12,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:12" (1/1) ... [2020-11-28 07:29:12,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:12" (1/1) ... [2020-11-28 07:29:12,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:12" (1/1) ... [2020-11-28 07:29:12,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:12" (1/1) ... [2020-11-28 07:29:12,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:12" (1/1) ... [2020-11-28 07:29:12,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:29:12,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:29:12,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:29:12,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:29:12,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6115be6-9940-4203-9ceb-a2fbef007350/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:29:12,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:29:12,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:29:13,208 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:29:13,209 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 07:29:13,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:29:13 BoogieIcfgContainer [2020-11-28 07:29:13,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:29:13,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:29:13,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:29:13,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:29:13,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:29:12" (1/3) ... [2020-11-28 07:29:13,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d7bdd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:29:13, skipping insertion in model container [2020-11-28 07:29:13,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:12" (2/3) ... [2020-11-28 07:29:13,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d7bdd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:29:13, skipping insertion in model container [2020-11-28 07:29:13,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:29:13" (3/3) ... [2020-11-28 07:29:13,237 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-wise.c [2020-11-28 07:29:13,250 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:29:13,255 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-28 07:29:13,268 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-28 07:29:13,298 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:29:13,298 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:29:13,298 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:29:13,299 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:29:13,299 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:29:13,299 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:29:13,299 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:29:13,299 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:29:13,334 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-28 07:29:13,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 07:29:13,340 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:13,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-28 07:29:13,341 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:13,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:13,354 INFO L82 PathProgramCache]: Analyzing trace with hash 30885, now seen corresponding path program 1 times [2020-11-28 07:29:13,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:13,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325372844] [2020-11-28 07:29:13,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:13,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:13,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325372844] [2020-11-28 07:29:13,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:13,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:29:13,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653667414] [2020-11-28 07:29:13,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:29:13,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:13,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:29:13,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:29:13,599 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2020-11-28 07:29:13,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:13,830 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2020-11-28 07:29:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:29:13,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-11-28 07:29:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:13,843 INFO L225 Difference]: With dead ends: 45 [2020-11-28 07:29:13,843 INFO L226 Difference]: Without dead ends: 35 [2020-11-28 07:29:13,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:13,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-28 07:29:13,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2020-11-28 07:29:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 07:29:13,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-11-28 07:29:13,893 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 3 [2020-11-28 07:29:13,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:13,893 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-11-28 07:29:13,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:29:13,894 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-11-28 07:29:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:29:13,894 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:13,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:29:13,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:29:13,895 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:13,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:13,897 INFO L82 PathProgramCache]: Analyzing trace with hash 957477, now seen corresponding path program 1 times [2020-11-28 07:29:13,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:13,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082333096] [2020-11-28 07:29:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:13,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082333096] [2020-11-28 07:29:13,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:13,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:29:13,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971530345] [2020-11-28 07:29:13,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:29:13,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:13,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:29:13,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:29:13,942 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 4 states. [2020-11-28 07:29:14,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:14,234 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-11-28 07:29:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:29:14,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-28 07:29:14,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:14,237 INFO L225 Difference]: With dead ends: 47 [2020-11-28 07:29:14,238 INFO L226 Difference]: Without dead ends: 45 [2020-11-28 07:29:14,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:14,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-28 07:29:14,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2020-11-28 07:29:14,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 07:29:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-11-28 07:29:14,260 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 4 [2020-11-28 07:29:14,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:14,261 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-11-28 07:29:14,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:29:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-11-28 07:29:14,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:29:14,264 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:14,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:14,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:29:14,265 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:14,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:14,270 INFO L82 PathProgramCache]: Analyzing trace with hash -511748973, now seen corresponding path program 1 times [2020-11-28 07:29:14,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:14,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130876788] [2020-11-28 07:29:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:14,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:14,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130876788] [2020-11-28 07:29:14,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:14,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:29:14,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816219] [2020-11-28 07:29:14,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:29:14,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:14,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:29:14,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:14,339 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-11-28 07:29:14,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:14,529 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2020-11-28 07:29:14,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:29:14,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-28 07:29:14,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:14,533 INFO L225 Difference]: With dead ends: 79 [2020-11-28 07:29:14,534 INFO L226 Difference]: Without dead ends: 78 [2020-11-28 07:29:14,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:29:14,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-28 07:29:14,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 65. [2020-11-28 07:29:14,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-28 07:29:14,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2020-11-28 07:29:14,560 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 8 [2020-11-28 07:29:14,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:14,560 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2020-11-28 07:29:14,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:29:14,560 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2020-11-28 07:29:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:29:14,561 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:14,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:14,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:29:14,562 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:14,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:14,563 INFO L82 PathProgramCache]: Analyzing trace with hash -511749165, now seen corresponding path program 1 times [2020-11-28 07:29:14,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:14,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576899422] [2020-11-28 07:29:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:14,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576899422] [2020-11-28 07:29:14,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:14,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:29:14,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296654005] [2020-11-28 07:29:14,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:29:14,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:14,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:29:14,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:29:14,612 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand 4 states. [2020-11-28 07:29:14,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:14,698 INFO L93 Difference]: Finished difference Result 96 states and 130 transitions. [2020-11-28 07:29:14,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:29:14,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 07:29:14,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:14,702 INFO L225 Difference]: With dead ends: 96 [2020-11-28 07:29:14,702 INFO L226 Difference]: Without dead ends: 51 [2020-11-28 07:29:14,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:29:14,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-28 07:29:14,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2020-11-28 07:29:14,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 07:29:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-11-28 07:29:14,716 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 8 [2020-11-28 07:29:14,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:14,717 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-11-28 07:29:14,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:29:14,717 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-11-28 07:29:14,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:29:14,718 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:14,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:14,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:29:14,719 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:14,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:14,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1315651091, now seen corresponding path program 1 times [2020-11-28 07:29:14,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:14,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146986564] [2020-11-28 07:29:14,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:14,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146986564] [2020-11-28 07:29:14,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:14,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:29:14,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79267534] [2020-11-28 07:29:14,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:14,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:14,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:14,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:14,769 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 3 states. [2020-11-28 07:29:14,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:14,805 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2020-11-28 07:29:14,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:14,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 07:29:14,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:14,807 INFO L225 Difference]: With dead ends: 42 [2020-11-28 07:29:14,807 INFO L226 Difference]: Without dead ends: 41 [2020-11-28 07:29:14,808 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 [2020-11-28 07:29:14,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-28 07:29:14,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-28 07:29:14,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-28 07:29:14,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-11-28 07:29:14,816 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 9 [2020-11-28 07:29:14,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:14,816 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-11-28 07:29:14,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-11-28 07:29:14,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:29:14,817 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:14,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:14,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:29:14,818 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:14,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:14,819 INFO L82 PathProgramCache]: Analyzing trace with hash -2115076497, now seen corresponding path program 1 times [2020-11-28 07:29:14,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:14,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007294966] [2020-11-28 07:29:14,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:14,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007294966] [2020-11-28 07:29:14,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:14,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:29:14,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266890107] [2020-11-28 07:29:14,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:29:14,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:14,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:29:14,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:29:14,902 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 4 states. [2020-11-28 07:29:14,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:14,974 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2020-11-28 07:29:14,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:29:14,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 07:29:14,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:14,978 INFO L225 Difference]: With dead ends: 75 [2020-11-28 07:29:14,978 INFO L226 Difference]: Without dead ends: 40 [2020-11-28 07:29:14,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:29:14,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-28 07:29:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2020-11-28 07:29:14,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 07:29:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-11-28 07:29:14,986 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 10 [2020-11-28 07:29:14,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:14,987 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-11-28 07:29:14,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:29:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-11-28 07:29:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:29:14,988 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:14,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:14,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:29:14,989 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:14,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:14,996 INFO L82 PathProgramCache]: Analyzing trace with hash -2115076689, now seen corresponding path program 1 times [2020-11-28 07:29:14,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:14,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115619980] [2020-11-28 07:29:14,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:15,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115619980] [2020-11-28 07:29:15,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:15,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:29:15,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591330192] [2020-11-28 07:29:15,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:29:15,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:15,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:29:15,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:15,090 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 5 states. [2020-11-28 07:29:15,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:15,232 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-11-28 07:29:15,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:29:15,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 07:29:15,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:15,233 INFO L225 Difference]: With dead ends: 54 [2020-11-28 07:29:15,233 INFO L226 Difference]: Without dead ends: 53 [2020-11-28 07:29:15,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:29:15,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-28 07:29:15,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2020-11-28 07:29:15,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-28 07:29:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-11-28 07:29:15,242 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 10 [2020-11-28 07:29:15,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:15,242 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-11-28 07:29:15,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:29:15,243 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-11-28 07:29:15,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:29:15,243 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:15,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:15,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:29:15,244 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:15,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:15,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1142867855, now seen corresponding path program 1 times [2020-11-28 07:29:15,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:15,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360248322] [2020-11-28 07:29:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:15,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360248322] [2020-11-28 07:29:15,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:15,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:29:15,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542749236] [2020-11-28 07:29:15,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:15,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:15,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:15,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:15,277 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 3 states. [2020-11-28 07:29:15,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:15,305 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-11-28 07:29:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:15,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-28 07:29:15,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:15,307 INFO L225 Difference]: With dead ends: 44 [2020-11-28 07:29:15,308 INFO L226 Difference]: Without dead ends: 43 [2020-11-28 07:29:15,308 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 [2020-11-28 07:29:15,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-28 07:29:15,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-28 07:29:15,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-28 07:29:15,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-11-28 07:29:15,315 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 11 [2020-11-28 07:29:15,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:15,315 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-11-28 07:29:15,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:15,315 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-11-28 07:29:15,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:29:15,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:15,316 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:15,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:29:15,317 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:15,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:15,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1620314709, now seen corresponding path program 1 times [2020-11-28 07:29:15,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:15,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353667308] [2020-11-28 07:29:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:15,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353667308] [2020-11-28 07:29:15,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:15,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:29:15,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121563116] [2020-11-28 07:29:15,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:29:15,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:15,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:29:15,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:15,411 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2020-11-28 07:29:15,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:15,518 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-11-28 07:29:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:29:15,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 07:29:15,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:15,520 INFO L225 Difference]: With dead ends: 56 [2020-11-28 07:29:15,520 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 07:29:15,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:29:15,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 07:29:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 07:29:15,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 07:29:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-28 07:29:15,524 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2020-11-28 07:29:15,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:15,525 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-28 07:29:15,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:29:15,525 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-28 07:29:15,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:29:15,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:15,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:29:15,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:29:15,526 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:15,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:15,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1069165097, now seen corresponding path program 1 times [2020-11-28 07:29:15,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:15,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977948161] [2020-11-28 07:29:15,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:15,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977948161] [2020-11-28 07:29:15,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:15,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:29:15,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114473384] [2020-11-28 07:29:15,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:29:15,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:15,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:29:15,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:29:15,623 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2020-11-28 07:29:15,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:15,714 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-11-28 07:29:15,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:29:15,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 07:29:15,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:15,715 INFO L225 Difference]: With dead ends: 28 [2020-11-28 07:29:15,715 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:29:15,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:29:15,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:29:15,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:29:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:29:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:29:15,717 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-28 07:29:15,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:15,717 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:29:15,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:29:15,717 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:29:15,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:29:15,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:29:15,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:29:15,850 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-28 07:29:15,850 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:29:15,850 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-28 07:29:15,850 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-28 07:29:15,850 INFO L274 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-11-28 07:29:15,851 INFO L274 CegarLoopResult]: For program point L17(lines 17 25) no Hoare annotation was computed. [2020-11-28 07:29:15,851 INFO L270 CegarLoopResult]: At program point L19-2(lines 18 24) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-11-28 07:29:15,851 INFO L270 CegarLoopResult]: At program point L17-1(lines 17 25) the Hoare annotation is: (or (<= ULTIMATE.start_main_~x~0 2147483647) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~y~0 2147483647))) [2020-11-28 07:29:15,851 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-28 07:29:15,851 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-28 07:29:15,852 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-28 07:29:15,852 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:29:15,852 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-28 07:29:15,852 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-28 07:29:15,852 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-11-28 07:29:15,852 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-11-28 07:29:15,852 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-11-28 07:29:15,853 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-11-28 07:29:15,853 INFO L274 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-11-28 07:29:15,853 INFO L274 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-11-28 07:29:15,853 INFO L274 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed. [2020-11-28 07:29:15,853 INFO L274 CegarLoopResult]: For program point L18-6(lines 18 24) no Hoare annotation was computed. [2020-11-28 07:29:15,853 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-28 07:29:15,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:29:15 BoogieIcfgContainer [2020-11-28 07:29:15,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:29:15,876 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:29:15,876 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:29:15,876 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:29:15,877 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:29:13" (3/4) ... [2020-11-28 07:29:15,881 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:29:15,892 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:29:15,893 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:29:15,893 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:29:15,958 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b6115be6-9940-4203-9ceb-a2fbef007350/bin/utaipan/witness.graphml [2020-11-28 07:29:15,958 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:29:15,961 INFO L168 Benchmark]: Toolchain (without parser) took 3526.92 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 41.1 MB in the beginning and 35.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:15,970 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 75.5 MB. Free memory was 50.1 MB in the beginning and 50.1 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:29:15,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.99 ms. Allocated memory is still 75.5 MB. Free memory was 40.9 MB in the beginning and 54.0 MB in the end (delta: -13.2 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:15,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.98 ms. Allocated memory is still 75.5 MB. Free memory was 53.8 MB in the beginning and 52.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:29:15,973 INFO L168 Benchmark]: Boogie Preprocessor took 22.32 ms. Allocated memory is still 75.5 MB. Free memory was 52.6 MB in the beginning and 51.7 MB in the end (delta: 939.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:29:15,973 INFO L168 Benchmark]: RCFGBuilder took 444.80 ms. Allocated memory is still 75.5 MB. Free memory was 51.7 MB in the beginning and 40.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:15,974 INFO L168 Benchmark]: TraceAbstraction took 2662.51 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 40.2 MB in the beginning and 37.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:15,975 INFO L168 Benchmark]: Witness Printer took 82.40 ms. Allocated memory is still 92.3 MB. Free memory was 37.7 MB in the beginning and 35.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:15,984 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 75.5 MB. Free memory was 50.1 MB in the beginning and 50.1 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 260.99 ms. Allocated memory is still 75.5 MB. Free memory was 40.9 MB in the beginning and 54.0 MB in the end (delta: -13.2 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.98 ms. Allocated memory is still 75.5 MB. Free memory was 53.8 MB in the beginning and 52.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.32 ms. Allocated memory is still 75.5 MB. Free memory was 52.6 MB in the beginning and 51.7 MB in the end (delta: 939.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 444.80 ms. Allocated memory is still 75.5 MB. Free memory was 51.7 MB in the beginning and 40.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2662.51 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 40.2 MB in the beginning and 37.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. * Witness Printer took 82.40 ms. Allocated memory is still 92.3 MB. Free memory was 37.7 MB in the beginning and 35.1 MB in the end (delta: 2.6 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: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: 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: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: x <= 2147483647 || x <= y + 2147483647 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((x <= 2147483647 && 0 <= y) && 0 <= x) && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 254 SDslu, 35 SDs, 0 SdLazy, 349 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 65 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 22 HoareAnnotationTreeSize, 2 FomulaSimplifications, 39 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 51 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 2067 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 3/3 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...