./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark40_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_50b9142c-53bd-406b-9515-60d6e6bea340/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_50b9142c-53bd-406b-9515-60d6e6bea340/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_50b9142c-53bd-406b-9515-60d6e6bea340/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_50b9142c-53bd-406b-9515-60d6e6bea340/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark40_polynomial.i -s /tmp/vcloud-vcloud-master/worker/run_dir_50b9142c-53bd-406b-9515-60d6e6bea340/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_50b9142c-53bd-406b-9515-60d6e6bea340/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 05dd65db78e92abd77b18eae9719465439afcc4a ................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:06:36,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:36,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:36,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:36,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:36,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:36,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:36,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:36,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:36,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:36,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:36,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:36,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:36,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:36,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:36,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:36,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:36,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:36,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:36,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:36,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:36,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:36,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:36,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:36,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:36,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:36,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:36,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:36,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:36,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:36,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:36,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:36,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:36,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:36,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:36,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:36,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:36,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:36,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:36,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:36,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:36,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_50b9142c-53bd-406b-9515-60d6e6bea340/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-22 13:06:36,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:36,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:36,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:36,870 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:36,870 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:36,870 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:36,870 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:36,871 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:36,871 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:36,871 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:36,872 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:36,872 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:36,873 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:36,873 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:36,873 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:36,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:36,874 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:36,875 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:06:36,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:36,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:36,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:36,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:36,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:36,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:36,876 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 13:06:36,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:36,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:36,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:36,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:36,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:36,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:36,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:36,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:36,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:36,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:36,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:36,880 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:36,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:36,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:36,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:36,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:36,881 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_50b9142c-53bd-406b-9515-60d6e6bea340/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_50b9142c-53bd-406b-9515-60d6e6bea340/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05dd65db78e92abd77b18eae9719465439afcc4a [2020-11-22 13:06:37,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:37,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:37,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:37,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:37,158 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:37,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_50b9142c-53bd-406b-9515-60d6e6bea340/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark40_polynomial.i [2020-11-22 13:06:37,225 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_50b9142c-53bd-406b-9515-60d6e6bea340/bin/utaipan/data/2fe50d728/66d11458669841f1828aebf09709f1ba/FLAGc8c7f96ec [2020-11-22 13:06:37,658 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:37,658 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_50b9142c-53bd-406b-9515-60d6e6bea340/sv-benchmarks/c/loop-zilu/benchmark40_polynomial.i [2020-11-22 13:06:37,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_50b9142c-53bd-406b-9515-60d6e6bea340/bin/utaipan/data/2fe50d728/66d11458669841f1828aebf09709f1ba/FLAGc8c7f96ec [2020-11-22 13:06:38,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_50b9142c-53bd-406b-9515-60d6e6bea340/bin/utaipan/data/2fe50d728/66d11458669841f1828aebf09709f1ba [2020-11-22 13:06:38,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:38,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:38,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:38,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:38,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:38,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:38" (1/1) ... [2020-11-22 13:06:38,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557d20d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:38, skipping insertion in model container [2020-11-22 13:06:38,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:38" (1/1) ... [2020-11-22 13:06:38,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:38,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:38,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:38,268 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:38,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:38,297 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:38,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:38 WrapperNode [2020-11-22 13:06:38,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:38,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:38,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:38,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:38,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:38" (1/1) ... [2020-11-22 13:06:38,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:38" (1/1) ... [2020-11-22 13:06:38,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:38,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:38,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:38,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:38,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:38" (1/1) ... [2020-11-22 13:06:38,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:38" (1/1) ... [2020-11-22 13:06:38,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:38" (1/1) ... [2020-11-22 13:06:38,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:38" (1/1) ... [2020-11-22 13:06:38,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:38" (1/1) ... [2020-11-22 13:06:38,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:38" (1/1) ... [2020-11-22 13:06:38,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:38" (1/1) ... [2020-11-22 13:06:38,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:38,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:38,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:38,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:38,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_50b9142c-53bd-406b-9515-60d6e6bea340/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:06:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:38,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:38,951 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:38,951 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:06:38,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:38 BoogieIcfgContainer [2020-11-22 13:06:38,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:38,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:38,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:38,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:38,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:38" (1/3) ... [2020-11-22 13:06:38,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1809ca6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:38, skipping insertion in model container [2020-11-22 13:06:38,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:38" (2/3) ... [2020-11-22 13:06:38,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1809ca6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:38, skipping insertion in model container [2020-11-22 13:06:38,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:38" (3/3) ... [2020-11-22 13:06:38,962 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark40_polynomial.i [2020-11-22 13:06:38,979 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:38,983 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-11-22 13:06:38,993 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-11-22 13:06:39,016 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:39,016 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:06:39,016 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:39,016 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:39,016 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:39,017 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:39,017 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:39,017 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:39,031 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-22 13:06:39,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-22 13:06:39,035 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:39,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-22 13:06:39,037 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:06:39,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:39,042 INFO L82 PathProgramCache]: Analyzing trace with hash 3382, now seen corresponding path program 1 times [2020-11-22 13:06:39,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:39,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004369721] [2020-11-22 13:06:39,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:39,123 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:06:39,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957619135] [2020-11-22 13:06:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_50b9142c-53bd-406b-9515-60d6e6bea340/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:06:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:39,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:39,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:39,276 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:06:39,277 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:06:39,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-22 13:06:39,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:39 BoogieIcfgContainer [2020-11-22 13:06:39,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:39,499 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:39,499 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:39,499 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:39,500 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:38" (3/4) ... [2020-11-22 13:06:39,502 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:06:39,530 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_50b9142c-53bd-406b-9515-60d6e6bea340/bin/utaipan/witness.graphml [2020-11-22 13:06:39,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:39,533 INFO L168 Benchmark]: Toolchain (without parser) took 1474.20 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 89.1 MB in the end (delta: 36.8 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:39,534 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 92.3 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:39,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.98 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 128.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:39,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.19 ms. Allocated memory is still 151.0 MB. Free memory was 128.9 MB in the beginning and 127.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:39,536 INFO L168 Benchmark]: Boogie Preprocessor took 35.45 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 126.3 MB in the end (delta: 888.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:39,537 INFO L168 Benchmark]: RCFGBuilder took 586.46 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 107.2 MB in the end (delta: 19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:39,538 INFO L168 Benchmark]: TraceAbstraction took 543.46 ms. Allocated memory is still 151.0 MB. Free memory was 106.8 MB in the beginning and 90.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:39,539 INFO L168 Benchmark]: Witness Printer took 32.16 ms. Allocated memory is still 151.0 MB. Free memory was 90.6 MB in the beginning and 89.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:39,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 92.3 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 238.98 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 128.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.19 ms. Allocated memory is still 151.0 MB. Free memory was 128.9 MB in the beginning and 127.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.45 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 126.3 MB in the end (delta: 888.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 586.46 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 107.2 MB in the end (delta: 19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 543.46 ms. Allocated memory is still 151.0 MB. Free memory was 106.8 MB in the beginning and 90.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 32.16 ms. Allocated memory is still 151.0 MB. Free memory was 90.6 MB in the beginning and 89.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] x*y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 12 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 incorrect! Received shutdown request...