./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i -s /tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/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 32bit --witnessprinter.graph.data.programhash f22151260432e5b71f08e38556ae1504245a6b14 ........................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:17:59,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:17:59,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:17:59,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:17:59,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:17:59,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:17:59,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:17:59,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:17:59,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:17:59,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:17:59,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:17:59,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:17:59,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:17:59,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:17:59,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:17:59,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:17:59,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:17:59,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:17:59,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:17:59,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:17:59,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:17:59,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:17:59,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:17:59,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:17:59,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:17:59,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:17:59,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:17:59,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:17:59,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:17:59,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:17:59,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:17:59,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:17:59,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:17:59,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:17:59,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:17:59,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:17:59,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:17:59,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:17:59,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:17:59,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:17:59,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:17:59,253 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-30 02:17:59,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:17:59,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:17:59,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:17:59,305 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:17:59,305 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:17:59,305 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:17:59,306 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:17:59,306 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:17:59,306 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:17:59,306 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:17:59,308 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:17:59,308 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:17:59,308 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:17:59,308 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:17:59,309 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:17:59,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:17:59,310 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:17:59,310 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:17:59,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:17:59,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:17:59,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:17:59,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:17:59,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:17:59,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:17:59,312 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 02:17:59,312 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:17:59,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:17:59,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:17:59,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:17:59,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:17:59,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:17:59,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:17:59,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:17:59,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:17:59,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:17:59,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:17:59,317 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:17:59,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:17:59,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:17:59,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:17:59,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:17:59,318 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_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f22151260432e5b71f08e38556ae1504245a6b14 [2020-11-30 02:17:59,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:17:59,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:17:59,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:17:59,695 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:17:59,696 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:17:59,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2020-11-30 02:17:59,773 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/bin/utaipan/data/1ea4d9b3f/875a7032860547c58d694e83e89ad75f/FLAGa7e5c4535 [2020-11-30 02:18:00,273 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:18:00,274 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2020-11-30 02:18:00,290 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/bin/utaipan/data/1ea4d9b3f/875a7032860547c58d694e83e89ad75f/FLAGa7e5c4535 [2020-11-30 02:18:00,652 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/bin/utaipan/data/1ea4d9b3f/875a7032860547c58d694e83e89ad75f [2020-11-30 02:18:00,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:18:00,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:18:00,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:18:00,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:18:00,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:18:00,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:18:00" (1/1) ... [2020-11-30 02:18:00,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12bf9037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:18:00, skipping insertion in model container [2020-11-30 02:18:00,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:18:00" (1/1) ... [2020-11-30 02:18:00,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:18:00,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:18:00,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:18:00,941 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:18:00,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:18:00,969 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:18:00,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:18:00 WrapperNode [2020-11-30 02:18:00,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:18:00,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:18:00,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:18:00,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:18:00,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:18:00" (1/1) ... [2020-11-30 02:18:00,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:18:00" (1/1) ... [2020-11-30 02:18:01,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:18:01,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:18:01,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:18:01,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:18:01,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:18:00" (1/1) ... [2020-11-30 02:18:01,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:18:00" (1/1) ... [2020-11-30 02:18:01,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:18:00" (1/1) ... [2020-11-30 02:18:01,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:18:00" (1/1) ... [2020-11-30 02:18:01,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:18:00" (1/1) ... [2020-11-30 02:18:01,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:18:00" (1/1) ... [2020-11-30 02:18:01,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:18:00" (1/1) ... [2020-11-30 02:18:01,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:18:01,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:18:01,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:18:01,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:18:01,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:18:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/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 [2020-11-30 02:18:01,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:18:01,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:18:01,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:18:01,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:18:01,610 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:18:01,611 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:18:01,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:18:01 BoogieIcfgContainer [2020-11-30 02:18:01,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:18:01,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:18:01,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:18:01,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:18:01,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:18:00" (1/3) ... [2020-11-30 02:18:01,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dae43c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:18:01, skipping insertion in model container [2020-11-30 02:18:01,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:18:00" (2/3) ... [2020-11-30 02:18:01,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dae43c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:18:01, skipping insertion in model container [2020-11-30 02:18:01,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:18:01" (3/3) ... [2020-11-30 02:18:01,623 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark52_polynomial.i [2020-11-30 02:18:01,635 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:18:01,640 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 02:18:01,654 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 02:18:01,678 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:18:01,678 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:18:01,678 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:18:01,679 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:18:01,679 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:18:01,679 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:18:01,679 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:18:01,679 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:18:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-30 02:18:01,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 02:18:01,699 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:18:01,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 02:18:01,700 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:18:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:18:01,706 INFO L82 PathProgramCache]: Analyzing trace with hash 73265, now seen corresponding path program 1 times [2020-11-30 02:18:01,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:18:01,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770064448] [2020-11-30 02:18:01,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:18:01,801 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:18:01,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897811911] [2020-11-30 02:18:01,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/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 [2020-11-30 02:18:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:18:01,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:18:01,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:18:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:18:01,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:18:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:18:01,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770064448] [2020-11-30 02:18:01,994 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:18:01,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897811911] [2020-11-30 02:18:01,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:18:01,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-30 02:18:01,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468723205] [2020-11-30 02:18:02,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:18:02,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:18:02,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:18:02,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:18:02,018 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-11-30 02:18:02,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:18:02,139 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-11-30 02:18:02,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:18:02,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-11-30 02:18:02,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:18:02,148 INFO L225 Difference]: With dead ends: 22 [2020-11-30 02:18:02,148 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:18:02,151 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 [2020-11-30 02:18:02,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:18:02,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:18:02,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:18:02,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:18:02,176 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2020-11-30 02:18:02,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:18:02,177 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:18:02,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:18:02,177 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:18:02,177 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:18:02,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-30 02:18:02,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:18:02,552 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2020-11-30 02:18:02,554 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-30 02:18:02,554 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:18:02,555 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-30 02:18:02,555 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-30 02:18:02,555 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-11-30 02:18:02,555 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-11-30 02:18:02,555 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-30 02:18:02,555 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-30 02:18:02,555 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:18:02,556 INFO L277 CegarLoopResult]: At program point L26(lines 19 27) the Hoare annotation is: true [2020-11-30 02:18:02,556 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-11-30 02:18:02,556 INFO L274 CegarLoopResult]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2020-11-30 02:18:02,556 INFO L270 CegarLoopResult]: At program point L22-4(lines 22 24) the Hoare annotation is: (<= (* ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~i~0) 2147483647) [2020-11-30 02:18:02,556 INFO L274 CegarLoopResult]: For program point L22-5(lines 22 24) no Hoare annotation was computed. [2020-11-30 02:18:02,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:18:02 BoogieIcfgContainer [2020-11-30 02:18:02,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:18:02,575 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:18:02,575 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:18:02,575 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:18:02,576 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:18:01" (3/4) ... [2020-11-30 02:18:02,579 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:18:02,588 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-30 02:18:02,588 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 02:18:02,589 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:18:02,589 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:18:02,629 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_522596b9-d31d-4bfc-b927-20d9ba4e3f6e/bin/utaipan/witness.graphml [2020-11-30 02:18:02,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:18:02,631 INFO L168 Benchmark]: Toolchain (without parser) took 1972.30 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 64.1 MB in the beginning and 47.4 MB in the end (delta: 16.7 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:18:02,632 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 92.3 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:18:02,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.80 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 63.9 MB in the beginning and 95.0 MB in the end (delta: -31.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:18:02,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.29 ms. Allocated memory is still 117.4 MB. Free memory was 95.0 MB in the beginning and 93.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:18:02,633 INFO L168 Benchmark]: Boogie Preprocessor took 49.47 ms. Allocated memory is still 117.4 MB. Free memory was 93.5 MB in the beginning and 92.9 MB in the end (delta: 631.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:18:02,634 INFO L168 Benchmark]: RCFGBuilder took 543.98 ms. Allocated memory is still 117.4 MB. Free memory was 92.9 MB in the beginning and 77.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:18:02,635 INFO L168 Benchmark]: TraceAbstraction took 959.19 ms. Allocated memory is still 117.4 MB. Free memory was 77.6 MB in the beginning and 49.5 MB in the end (delta: 28.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:18:02,635 INFO L168 Benchmark]: Witness Printer took 54.64 ms. Allocated memory is still 117.4 MB. Free memory was 49.5 MB in the beginning and 47.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:18:02,638 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 92.3 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.80 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 63.9 MB in the beginning and 95.0 MB in the end (delta: -31.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.29 ms. Allocated memory is still 117.4 MB. Free memory was 95.0 MB in the beginning and 93.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.47 ms. Allocated memory is still 117.4 MB. Free memory was 93.5 MB in the beginning and 92.9 MB in the end (delta: 631.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 543.98 ms. Allocated memory is still 117.4 MB. Free memory was 92.9 MB in the beginning and 77.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 959.19 ms. Allocated memory is still 117.4 MB. Free memory was 77.6 MB in the beginning and 49.5 MB in the end (delta: 28.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 54.64 ms. Allocated memory is still 117.4 MB. Free memory was 49.5 MB in the beginning and 47.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: 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: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: i * i <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 9 SDslu, 3 SDs, 0 SdLazy, 16 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 1 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 3 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...