./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/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 0.2.0-7b2dab5 [2020-12-03 12:35:16,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:35:16,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:35:16,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:35:16,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:35:16,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:35:16,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:35:16,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:35:16,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:35:16,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:35:16,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:35:16,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:35:16,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:35:16,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:35:16,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:35:16,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:35:16,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:35:16,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:35:16,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:35:16,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:35:16,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:35:16,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:35:16,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:35:16,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:35:16,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:35:16,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:35:16,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:35:16,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:35:16,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:35:16,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:35:16,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:35:16,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:35:16,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:35:16,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:35:16,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:35:16,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:35:16,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:35:16,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:35:16,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:35:16,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:35:16,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:35:16,333 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-12-03 12:35:16,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:35:16,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:35:16,376 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:35:16,376 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:35:16,377 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:35:16,377 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:35:16,377 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:35:16,377 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:35:16,378 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:35:16,378 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:35:16,379 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:35:16,379 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:35:16,380 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:35:16,380 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:35:16,380 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:35:16,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:35:16,381 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:35:16,381 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 12:35:16,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:35:16,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:35:16,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:35:16,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:35:16,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:35:16,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:35:16,383 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-03 12:35:16,383 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:35:16,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:35:16,383 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:35:16,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:35:16,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:35:16,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:35:16,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:35:16,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:35:16,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:35:16,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:35:16,385 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:35:16,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:35:16,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:35:16,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:35:16,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:35:16,387 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_fc307463-9d68-4493-b371-04f888c45beb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f22151260432e5b71f08e38556ae1504245a6b14 [2020-12-03 12:35:16,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:35:16,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:35:16,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:35:16,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:35:16,707 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:35:16,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2020-12-03 12:35:16,783 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/bin/utaipan/data/1c94b0127/6a43582e1acf4967baa80b415675fa40/FLAGf450d8812 [2020-12-03 12:35:17,286 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:35:17,287 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2020-12-03 12:35:17,293 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/bin/utaipan/data/1c94b0127/6a43582e1acf4967baa80b415675fa40/FLAGf450d8812 [2020-12-03 12:35:17,779 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/bin/utaipan/data/1c94b0127/6a43582e1acf4967baa80b415675fa40 [2020-12-03 12:35:17,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:35:17,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:35:17,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:17,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:35:17,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:35:17,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:17" (1/1) ... [2020-12-03 12:35:17,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fa8945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:17, skipping insertion in model container [2020-12-03 12:35:17,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:17" (1/1) ... [2020-12-03 12:35:17,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:35:17,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:35:17,990 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i[872,885] [2020-12-03 12:35:17,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:18,016 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:35:18,041 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i[872,885] [2020-12-03 12:35:18,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:18,060 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:35:18,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:18 WrapperNode [2020-12-03 12:35:18,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:18,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:18,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:35:18,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:35:18,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:18" (1/1) ... [2020-12-03 12:35:18,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:18" (1/1) ... [2020-12-03 12:35:18,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:18,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:35:18,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:35:18,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:35:18,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:18" (1/1) ... [2020-12-03 12:35:18,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:18" (1/1) ... [2020-12-03 12:35:18,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:18" (1/1) ... [2020-12-03 12:35:18,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:18" (1/1) ... [2020-12-03 12:35:18,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:18" (1/1) ... [2020-12-03 12:35:18,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:18" (1/1) ... [2020-12-03 12:35:18,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:18" (1/1) ... [2020-12-03 12:35:18,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:35:18,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:35:18,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:35:18,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:35:18,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/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 [2020-12-03 12:35:18,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:35:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:35:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:35:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:35:20,503 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:35:20,504 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-03 12:35:20,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:20 BoogieIcfgContainer [2020-12-03 12:35:20,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:35:20,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:35:20,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:35:20,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:35:20,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:35:17" (1/3) ... [2020-12-03 12:35:20,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bf64fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:20, skipping insertion in model container [2020-12-03 12:35:20,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:18" (2/3) ... [2020-12-03 12:35:20,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bf64fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:20, skipping insertion in model container [2020-12-03 12:35:20,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:20" (3/3) ... [2020-12-03 12:35:20,515 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark52_polynomial.i [2020-12-03 12:35:20,529 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:35:20,533 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-03 12:35:20,544 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-03 12:35:20,568 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:35:20,569 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:35:20,569 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:35:20,569 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:35:20,569 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:35:20,569 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:35:20,569 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:35:20,569 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:35:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-12-03 12:35:20,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-03 12:35:20,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:20,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-03 12:35:20,587 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:35:20,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:20,591 INFO L82 PathProgramCache]: Analyzing trace with hash 67499, now seen corresponding path program 1 times [2020-12-03 12:35:20,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:20,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189080757] [2020-12-03 12:35:20,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:20,684 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 12:35:20,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854427179] [2020-12-03 12:35:20,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/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 [2020-12-03 12:35:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:20,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:35:20,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:35:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:20,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:35:22,823 WARN L860 $PredicateComparison]: unable to prove that (<= (* c_ULTIMATE.start_main_~i~0 c_ULTIMATE.start_main_~i~0) 2147483647) is different from true [2020-12-03 12:35:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:22,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189080757] [2020-12-03 12:35:22,855 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:35:22,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854427179] [2020-12-03 12:35:22,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:22,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-12-03 12:35:22,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865996507] [2020-12-03 12:35:22,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:35:22,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:22,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:35:22,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2020-12-03 12:35:22,880 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-12-03 12:35:24,939 WARN L860 $PredicateComparison]: unable to prove that (and (<= (* c_ULTIMATE.start_main_~i~0 c_ULTIMATE.start_main_~i~0) 2147483647) (< 0 (+ c_ULTIMATE.start_main_~i~0 10)) (< c_ULTIMATE.start_main_~i~0 10)) is different from true [2020-12-03 12:35:26,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:26,990 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-12-03 12:35:26,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:35:26,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-12-03 12:35:26,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:26,997 INFO L225 Difference]: With dead ends: 19 [2020-12-03 12:35:26,998 INFO L226 Difference]: Without dead ends: 9 [2020-12-03 12:35:27,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=7, Invalid=5, Unknown=2, NotChecked=6, Total=20 [2020-12-03 12:35:27,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-03 12:35:27,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-03 12:35:27,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-03 12:35:27,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-03 12:35:27,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2020-12-03 12:35:27,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:27,031 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-12-03 12:35:27,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:35:27,031 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-03 12:35:27,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-03 12:35:27,031 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:27,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:35:27,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-03 12:35:27,251 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:35:27,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:27,252 INFO L82 PathProgramCache]: Analyzing trace with hash -253120167, now seen corresponding path program 1 times [2020-12-03 12:35:27,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:27,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895797391] [2020-12-03 12:35:27,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:27,273 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 12:35:27,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003810914] [2020-12-03 12:35:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:35:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:27,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-03 12:35:27,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:35:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:27,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:35:29,421 WARN L860 $PredicateComparison]: unable to prove that (<= (* c_ULTIMATE.start_main_~i~0 c_ULTIMATE.start_main_~i~0) 2147483647) is different from true [2020-12-03 12:35:31,451 WARN L860 $PredicateComparison]: unable to prove that (<= (+ (* c_ULTIMATE.start_main_~i~0 c_ULTIMATE.start_main_~i~0) (* 2 c_ULTIMATE.start_main_~i~0)) 2147483646) is different from true [2020-12-03 12:35:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-12-03 12:35:31,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895797391] [2020-12-03 12:35:31,465 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:35:31,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003810914] [2020-12-03 12:35:31,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1935142899] [2020-12-03 12:35:31,494 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-03 12:35:31,494 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:35:31,499 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:35:31,505 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:35:31,505 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:35:32,101 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:35:32,224 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-03 12:35:34,321 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_#t~string1.offset| 0) (<= 0 |c_#t~string0.base|) (<= |c_#NULL.base| 0) (= |c_#NULL.base| 0) (<= 0 |c_#NULL.offset|) (<= 0 (+ c_ULTIMATE.start_main_~i~0 10)) (<= 0 |c_#t~string1.base|) (<= |c_#t~string1.offset| 0) (<= |c_#t~string0.offset| 0) (<= (* c_ULTIMATE.start_main_~i~0 c_ULTIMATE.start_main_~i~0) 2147483647) (<= 0 |c_#t~string0.offset|) (<= 0 |c_#t~string1.offset|) (<= 0 |c_#NULL.base|) (<= c_ULTIMATE.start_main_~i~0 12) (= |c_#NULL.offset| 0) (= |c_#t~string0.offset| 0) (<= |c_#NULL.offset| 0) (<= 0 |c_#StackHeapBarrier|)) is different from true [2020-12-03 12:35:36,739 WARN L197 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 84 DAG size of output: 51 [2020-12-03 12:35:38,999 WARN L197 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 86 DAG size of output: 44 [2020-12-03 12:35:39,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-03 12:35:39,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3] total 10 [2020-12-03 12:35:39,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997738192] [2020-12-03 12:35:39,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-03 12:35:39,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:39,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-03 12:35:39,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=40, Unknown=3, NotChecked=42, Total=110 [2020-12-03 12:35:39,053 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2020-12-03 12:35:41,092 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_ULTIMATE.start_main_~i~0 c_ULTIMATE.start_main_~i~0)) (.cse0 (select |c_#memory_int| |c_#t~string0.base|))) (and (<= 0 |c_#NULL.offset|) (= (select .cse0 |c_#t~string0.offset|) 48) (= (select |c_#valid| 0) 0) (<= |c_#t~string1.offset| 0) (<= .cse1 2147483647) (< |c_#StackHeapBarrier| |c_#t~string0.base|) (< |c_#StackHeapBarrier| |c_#t~string1.base|) (<= c_ULTIMATE.start_main_~i~0 12) (= |c_#NULL.offset| 0) (= (select |c_#valid| |c_#t~string1.base|) 1) (<= 0 |c_#StackHeapBarrier|) (= |c_#t~string1.offset| 0) (<= 0 |c_#t~string0.base|) (< .cse1 100) (<= |c_#NULL.base| 0) (= |c_#NULL.base| 0) (= (select .cse0 (+ |c_#t~string0.offset| 1)) 0) (= (select |c_#length| |c_#t~string1.base|) 25) (= 2 (select |c_#length| |c_#t~string0.base|)) (<= 0 (+ c_ULTIMATE.start_main_~i~0 10)) (<= 0 |c_#t~string1.base|) (<= |c_#t~string0.offset| 0) (<= 0 |c_#t~string0.offset|) (= (select |c_#valid| |c_#t~string0.base|) 1) (< 0 |c_#StackHeapBarrier|) (<= 0 |c_#t~string1.offset|) (<= 0 |c_#NULL.base|) (= |c_#t~string0.offset| 0) (<= |c_#NULL.offset| 0))) is different from true [2020-12-03 12:35:43,156 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_#t~string1.offset| 0)) (.cse1 (= |c_#NULL.base| 0)) (.cse2 (+ c_ULTIMATE.start_main_~i~0 10)) (.cse15 (* c_ULTIMATE.start_main_~i~0 c_ULTIMATE.start_main_~i~0)) (.cse12 (= |c_#NULL.offset| 0)) (.cse14 (= |c_#t~string0.offset| 0))) (and .cse0 (<= 0 |c_#t~string0.base|) (<= |c_#NULL.base| 0) .cse1 (<= 0 |c_#NULL.offset|) (let ((.cse16 (select |c_#memory_int| |c_#t~string0.base|))) (let ((.cse3 (= (select .cse16 |c_#t~string0.offset|) 48)) (.cse4 (= (select .cse16 (+ |c_#t~string0.offset| 1)) 0)) (.cse5 (= (select |c_#valid| 0) 0)) (.cse6 (= (select |c_#length| |c_#t~string1.base|) 25)) (.cse7 (= 2 (select |c_#length| |c_#t~string0.base|))) (.cse8 (< |c_#StackHeapBarrier| |c_#t~string0.base|)) (.cse9 (= (select |c_#valid| |c_#t~string0.base|) 1)) (.cse10 (< 0 |c_#StackHeapBarrier|)) (.cse11 (< |c_#StackHeapBarrier| |c_#t~string1.base|)) (.cse13 (= (select |c_#valid| |c_#t~string1.base|) 1))) (or (and .cse0 (< 0 .cse2) .cse1 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (< c_ULTIMATE.start_main_~i~0 10) .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (< .cse15 (+ (* 2 c_ULTIMATE.start_main_~i~0) 99)) .cse14)))) (<= 0 .cse2) (<= 0 |c_#t~string1.base|) (<= |c_#t~string1.offset| 0) (<= |c_#t~string0.offset| 0) (<= .cse15 2147483647) (<= 0 |c_#t~string0.offset|) (<= 0 |c_#t~string1.offset|) (<= 0 |c_#NULL.base|) (<= c_ULTIMATE.start_main_~i~0 12) .cse12 .cse14 (<= |c_#NULL.offset| 0) (<= 0 |c_#StackHeapBarrier|))) is different from true [2020-12-03 12:35:43,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:43,157 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-12-03 12:35:43,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 12:35:43,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-12-03 12:35:43,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:43,158 INFO L225 Difference]: With dead ends: 10 [2020-12-03 12:35:43,158 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:35:43,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=29, Invalid=42, Unknown=5, NotChecked=80, Total=156 [2020-12-03 12:35:43,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:35:43,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:35:43,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:35:43,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:35:43,160 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-12-03 12:35:43,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:43,160 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:35:43,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-03 12:35:43,160 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:35:43,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:35:43,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:35:43,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:35:43,534 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-12-03 12:35:43,536 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-03 12:35:43,536 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:35:43,536 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-12-03 12:35:43,536 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-12-03 12:35:43,537 INFO L262 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-12-03 12:35:43,537 INFO L262 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-12-03 12:35:43,537 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-03 12:35:43,537 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-12-03 12:35:43,537 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:35:43,537 INFO L265 CegarLoopResult]: At program point L26(lines 19 27) the Hoare annotation is: true [2020-12-03 12:35:43,538 INFO L262 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-12-03 12:35:43,538 INFO L262 CegarLoopResult]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2020-12-03 12:35:43,538 INFO L258 CegarLoopResult]: At program point L22-4(lines 22 24) the Hoare annotation is: (let ((.cse14 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= |#t~string1.offset| 0)) (.cse1 (= |#NULL.base| 0)) (.cse2 (= (select .cse14 |#t~string0.offset|) 48)) (.cse3 (= (select .cse14 (+ |#t~string0.offset| 1)) 0)) (.cse4 (= (select |#valid| 0) 0)) (.cse5 (= (select |#length| |#t~string1.base|) 25)) (.cse6 (= 2 (select |#length| |#t~string0.base|))) (.cse7 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse8 (= (select |#valid| |#t~string0.base|) 1)) (.cse9 (< 0 |#StackHeapBarrier|)) (.cse10 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (= (select |#valid| |#t~string1.base|) 1)) (.cse13 (= |#t~string0.offset| 0))) (or (and .cse0 (< 0 (+ ULTIMATE.start_main_~i~0 10)) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (< ULTIMATE.start_main_~i~0 10) .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (< (* ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~i~0) (+ (* 2 ULTIMATE.start_main_~i~0) 99)) .cse13)))) [2020-12-03 12:35:43,538 INFO L262 CegarLoopResult]: For program point L22-5(lines 22 24) no Hoare annotation was computed. [2020-12-03 12:35:43,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:35:43 BoogieIcfgContainer [2020-12-03 12:35:43,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:35:43,562 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:35:43,562 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:35:43,562 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:35:43,563 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:20" (3/4) ... [2020-12-03 12:35:43,566 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:35:43,574 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-03 12:35:43,574 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-03 12:35:43,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:35:43,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:35:43,610 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fc307463-9d68-4493-b371-04f888c45beb/bin/utaipan/witness.graphml [2020-12-03 12:35:43,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:35:43,611 INFO L168 Benchmark]: Toolchain (without parser) took 25827.59 ms. Allocated memory is still 125.8 MB. Free memory was 101.2 MB in the beginning and 84.1 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:43,612 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory was 52.9 MB in the beginning and 52.8 MB in the end (delta: 64.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:43,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.05 ms. Allocated memory is still 125.8 MB. Free memory was 101.2 MB in the beginning and 101.5 MB in the end (delta: -248.2 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:43,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.90 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 100.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:43,614 INFO L168 Benchmark]: Boogie Preprocessor took 33.86 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 99.1 MB in the end (delta: 876.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:43,614 INFO L168 Benchmark]: RCFGBuilder took 2370.99 ms. Allocated memory is still 125.8 MB. Free memory was 99.1 MB in the beginning and 84.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:43,615 INFO L168 Benchmark]: TraceAbstraction took 23053.47 ms. Allocated memory is still 125.8 MB. Free memory was 84.4 MB in the beginning and 87.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:43,616 INFO L168 Benchmark]: Witness Printer took 48.61 ms. Allocated memory is still 125.8 MB. Free memory was 87.2 MB in the beginning and 84.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:43,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory was 52.9 MB in the beginning and 52.8 MB in the end (delta: 64.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.05 ms. Allocated memory is still 125.8 MB. Free memory was 101.2 MB in the beginning and 101.5 MB in the end (delta: -248.2 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.90 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 100.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.86 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 99.1 MB in the end (delta: 876.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2370.99 ms. Allocated memory is still 125.8 MB. Free memory was 99.1 MB in the beginning and 84.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 23053.47 ms. Allocated memory is still 125.8 MB. Free memory was 84.4 MB in the beginning and 87.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. * Witness Printer took 48.61 ms. Allocated memory is still 125.8 MB. Free memory was 87.2 MB in the beginning and 84.1 MB in the end (delta: 3.1 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: ((((((((((((((("benchmark52_polynomial.c" == 0 && 0 < i + 10) && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && unknown-#length-unknown["benchmark52_polynomial.c"] == 25) && 2 == unknown-#length-unknown["0"]) && unknown-#StackHeapBarrier-unknown < "0") && \valid["0"] == 1) && i < 10) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#StackHeapBarrier-unknown < "benchmark52_polynomial.c") && #NULL == 0) && \valid["benchmark52_polynomial.c"] == 1) && "0" == 0) || (((((((((((((("benchmark52_polynomial.c" == 0 && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && unknown-#length-unknown["benchmark52_polynomial.c"] == 25) && 2 == unknown-#length-unknown["0"]) && unknown-#StackHeapBarrier-unknown < "0") && \valid["0"] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#StackHeapBarrier-unknown < "benchmark52_polynomial.c") && #NULL == 0) && \valid["benchmark52_polynomial.c"] == 1) && i * i < 2 * i + 99) && "0" == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 15 SDslu, 1 SDs, 0 SdLazy, 17 SolverSat, 7 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.1s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 145 HoareAnnotationTreeSize, 2 FomulaSimplifications, 81 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 774 SizeOfPredicates, 2 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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: OVERALL_TIME[ms]: 608, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 7, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 19, TOOLS_POST_TIME[ms]: 195, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 19, TOOLS_QUANTIFIERELIM_TIME[ms]: 180, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 115, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 33, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 157, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 181, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 7, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME[ms]: 20, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 240, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 240, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 8, DAG_COMPRESSION_PROCESSED_NODES: 75, DAG_COMPRESSION_RETAINED_NODES: 28, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...