./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 331cd263c474a506c65c04d2df5592f079677e1c ........................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:51:14,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:51:14,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:51:14,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:51:14,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:51:14,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:51:14,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:51:14,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:51:14,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:51:14,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:51:14,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:51:14,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:51:14,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:51:14,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:51:14,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:51:14,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:51:14,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:51:14,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:51:14,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:51:14,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:51:14,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:51:14,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:51:14,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:51:14,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:51:14,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:51:14,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:51:14,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:51:14,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:51:14,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:51:14,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:51:14,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:51:14,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:51:14,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:51:14,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:51:14,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:51:14,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:51:14,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:51:14,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:51:14,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:51:14,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:51:14,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:51:14,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:51:14,714 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:51:14,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:51:14,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:51:14,715 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:51:14,716 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:51:14,716 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:51:14,716 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:51:14,716 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:51:14,716 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:51:14,717 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:51:14,717 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:51:14,717 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:51:14,717 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:51:14,717 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:51:14,718 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:51:14,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:51:14,719 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:51:14,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:51:14,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:51:14,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:51:14,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:51:14,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:51:14,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:51:14,720 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:51:14,720 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:51:14,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:51:14,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:51:14,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:51:14,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:51:14,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:51:14,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:51:14,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:51:14,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:51:14,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:51:14,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:51:14,723 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:51:14,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:51:14,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:51:14,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:51:14,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:51:14,724 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_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 331cd263c474a506c65c04d2df5592f079677e1c [2020-11-22 12:51:14,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:51:15,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:51:15,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:51:15,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:51:15,018 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:51:15,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound1.c [2020-11-22 12:51:15,102 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/bin/utaipan/data/e99950a03/b67225dbcade49d08a7b50378a9c2392/FLAG071a4b991 [2020-11-22 12:51:15,526 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:51:15,527 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound1.c [2020-11-22 12:51:15,535 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/bin/utaipan/data/e99950a03/b67225dbcade49d08a7b50378a9c2392/FLAG071a4b991 [2020-11-22 12:51:15,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/bin/utaipan/data/e99950a03/b67225dbcade49d08a7b50378a9c2392 [2020-11-22 12:51:15,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:51:15,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:51:15,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:51:15,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:51:15,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:51:15,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:51:15" (1/1) ... [2020-11-22 12:51:15,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78af17ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:15, skipping insertion in model container [2020-11-22 12:51:15,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:51:15" (1/1) ... [2020-11-22 12:51:15,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:51:15,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:51:16,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:51:16,199 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:51:16,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:51:16,234 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:51:16,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:16 WrapperNode [2020-11-22 12:51:16,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:51:16,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:51:16,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:51:16,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:51:16,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:16" (1/1) ... [2020-11-22 12:51:16,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:16" (1/1) ... [2020-11-22 12:51:16,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:51:16,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:51:16,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:51:16,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:51:16,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:16" (1/1) ... [2020-11-22 12:51:16,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:16" (1/1) ... [2020-11-22 12:51:16,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:16" (1/1) ... [2020-11-22 12:51:16,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:16" (1/1) ... [2020-11-22 12:51:16,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:16" (1/1) ... [2020-11-22 12:51:16,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:16" (1/1) ... [2020-11-22 12:51:16,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:16" (1/1) ... [2020-11-22 12:51:16,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:51:16,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:51:16,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:51:16,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:51:16,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/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 [2020-11-22 12:51:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:51:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:51:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:51:16,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:51:17,066 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:51:17,066 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-22 12:51:17,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:17 BoogieIcfgContainer [2020-11-22 12:51:17,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:51:17,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:51:17,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:51:17,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:51:17,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:51:15" (1/3) ... [2020-11-22 12:51:17,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cab265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:51:17, skipping insertion in model container [2020-11-22 12:51:17,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:16" (2/3) ... [2020-11-22 12:51:17,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cab265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:51:17, skipping insertion in model container [2020-11-22 12:51:17,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:17" (3/3) ... [2020-11-22 12:51:17,076 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound1.c [2020-11-22 12:51:17,084 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:51:17,087 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-22 12:51:17,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-22 12:51:17,121 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:51:17,122 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:51:17,122 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:51:17,122 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:51:17,122 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:51:17,123 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:51:17,123 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:51:17,123 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:51:17,136 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-22 12:51:17,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 12:51:17,141 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:51:17,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 12:51:17,142 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:51:17,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:51:17,147 INFO L82 PathProgramCache]: Analyzing trace with hash 5341623, now seen corresponding path program 1 times [2020-11-22 12:51:17,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:51:17,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669172687] [2020-11-22 12:51:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:51:17,218 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:51:17,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1510144030] [2020-11-22 12:51:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:51:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:51:17,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-22 12:51:17,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:51:17,551 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 12:51:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:51:17,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:51:17,657 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:51:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:51:17,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669172687] [2020-11-22 12:51:17,679 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:51:17,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510144030] [2020-11-22 12:51:17,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:51:17,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:51:17,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281989634] [2020-11-22 12:51:17,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:51:17,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:51:17,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:51:17,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:51:17,702 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-11-22 12:51:17,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:51:17,813 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2020-11-22 12:51:17,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:51:17,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-11-22 12:51:17,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:51:17,822 INFO L225 Difference]: With dead ends: 29 [2020-11-22 12:51:17,822 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:51:17,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:51:17,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:51:17,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:51:17,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:51:17,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:51:17,848 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-11-22 12:51:17,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:51:17,849 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:51:17,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:51:17,849 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:51:17,849 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:51:18,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-22 12:51:18,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:51:18,185 INFO L274 CegarLoopResult]: For program point L35-2(lines 35 55) no Hoare annotation was computed. [2020-11-22 12:51:18,185 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-22 12:51:18,185 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:51:18,185 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-22 12:51:18,186 INFO L270 CegarLoopResult]: At program point L12-1(lines 37 38) the Hoare annotation is: (let ((.cse1 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (let ((.cse0 (* .cse1 .cse1))) (and (< (+ .cse0 1) (+ ULTIMATE.start_main_~A~0 (* 2 .cse1))) (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) (<= ULTIMATE.start_main_~A~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= .cse0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (= ULTIMATE.start_main_~v~0 1)))) [2020-11-22 12:51:18,186 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-22 12:51:18,186 INFO L270 CegarLoopResult]: At program point L12-3(lines 42 43) the Hoare annotation is: false [2020-11-22 12:51:18,186 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-22 12:51:18,186 INFO L270 CegarLoopResult]: At program point L12-5(lines 50 51) the Hoare annotation is: false [2020-11-22 12:51:18,186 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-22 12:51:18,187 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (let ((.cse1 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (let ((.cse0 (* .cse1 .cse1))) (and (< (+ .cse0 1) (+ ULTIMATE.start_main_~A~0 (* 2 .cse1))) (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) (<= ULTIMATE.start_main_~A~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= .cse0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (= ULTIMATE.start_main_~v~0 1)))) [2020-11-22 12:51:18,187 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-22 12:51:18,187 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-22 12:51:18,187 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-22 12:51:18,187 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-22 12:51:18,187 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-22 12:51:18,187 INFO L274 CegarLoopResult]: For program point L48-1(lines 35 55) no Hoare annotation was computed. [2020-11-22 12:51:18,188 INFO L270 CegarLoopResult]: At program point L48-2(lines 35 55) the Hoare annotation is: (let ((.cse1 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (let ((.cse0 (* .cse1 .cse1))) (and (< (+ .cse0 1) (+ ULTIMATE.start_main_~A~0 (* 2 .cse1))) (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) (<= ULTIMATE.start_main_~A~0 1) (= .cse0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (= ULTIMATE.start_main_~v~0 1)))) [2020-11-22 12:51:18,188 INFO L270 CegarLoopResult]: At program point L40-2(lines 40 46) the Hoare annotation is: false [2020-11-22 12:51:18,188 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-22 12:51:18,188 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:51:18,188 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-22 12:51:18,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:51:18 BoogieIcfgContainer [2020-11-22 12:51:18,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:51:18,226 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:51:18,231 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:51:18,231 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:51:18,232 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:17" (3/4) ... [2020-11-22 12:51:18,234 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:51:18,244 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2020-11-22 12:51:18,248 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-22 12:51:18,251 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:51:18,252 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:51:18,318 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d0c86ba9-8d75-4993-bf1f-b1c3f5138ed8/bin/utaipan/witness.graphml [2020-11-22 12:51:18,318 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:51:18,320 INFO L168 Benchmark]: Toolchain (without parser) took 2376.17 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 61.2 MB in the beginning and 53.0 MB in the end (delta: 8.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:18,320 INFO L168 Benchmark]: CDTParser took 0.86 ms. Allocated memory is still 90.2 MB. Free memory is still 46.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:51:18,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.00 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 61.2 MB in the beginning and 88.0 MB in the end (delta: -26.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:18,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.75 ms. Allocated memory is still 111.1 MB. Free memory was 88.0 MB in the beginning and 86.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:18,322 INFO L168 Benchmark]: Boogie Preprocessor took 23.85 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 85.6 MB in the end (delta: 955.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:51:18,322 INFO L168 Benchmark]: RCFGBuilder took 770.59 ms. Allocated memory is still 111.1 MB. Free memory was 85.0 MB in the beginning and 59.3 MB in the end (delta: 25.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:18,323 INFO L168 Benchmark]: TraceAbstraction took 1155.44 ms. Allocated memory is still 111.1 MB. Free memory was 58.7 MB in the beginning and 55.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:18,324 INFO L168 Benchmark]: Witness Printer took 92.35 ms. Allocated memory is still 111.1 MB. Free memory was 55.9 MB in the beginning and 53.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:18,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86 ms. Allocated memory is still 90.2 MB. Free memory is still 46.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.00 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 61.2 MB in the beginning and 88.0 MB in the end (delta: -26.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.75 ms. Allocated memory is still 111.1 MB. Free memory was 88.0 MB in the beginning and 86.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.85 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 85.6 MB in the end (delta: 955.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 770.59 ms. Allocated memory is still 111.1 MB. Free memory was 85.0 MB in the beginning and 59.3 MB in the end (delta: 25.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1155.44 ms. Allocated memory is still 111.1 MB. Free memory was 58.7 MB in the beginning and 55.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * Witness Printer took 92.35 ms. Allocated memory is still 111.1 MB. Free memory was 55.9 MB in the beginning and 53.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && (u + 1) % -2 == 0) && A <= 1) && 1 <= cond) && (u * -1 + 1) / -2 * ((u * -1 + 1) / -2) == r + A) && v == 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && (u + 1) % -2 == 0) && A <= 1) && 1 <= cond) && (u * -1 + 1) / -2 * ((u * -1 + 1) / -2) == r + A) && v == 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && (u + 1) % -2 == 0) && A <= 1) && (u * -1 + 1) / -2 * ((u * -1 + 1) / -2) == r + A) && v == 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 5 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 9 NumberOfFragments, 195 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 273 SizeOfPredicates, 9 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...