./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark53_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_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark53_polynomial.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/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 85b185f65b4911b86277862c0855e8bdc8a98e4a ................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2020-12-09 18:52:22,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:52:22,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:52:23,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:52:23,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:52:23,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:52:23,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:52:23,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:52:23,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:52:23,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:52:23,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:52:23,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:52:23,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:52:23,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:52:23,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:52:23,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:52:23,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:52:23,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:52:23,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:52:23,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:52:23,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:52:23,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:52:23,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:52:23,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:52:23,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:52:23,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:52:23,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:52:23,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:52:23,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:52:23,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:52:23,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:52:23,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:52:23,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:52:23,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:52:23,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:52:23,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:52:23,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:52:23,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:52:23,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:52:23,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:52:23,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:52:23,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-12-09 18:52:23,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:52:23,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:52:23,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:52:23,068 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:52:23,068 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:52:23,069 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:52:23,069 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:52:23,069 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:52:23,069 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:52:23,069 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:52:23,069 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:52:23,069 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:52:23,069 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:52:23,070 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:52:23,070 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:52:23,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:52:23,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:52:23,070 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 18:52:23,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:52:23,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:52:23,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:52:23,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:52:23,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:52:23,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:52:23,071 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 18:52:23,071 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:52:23,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:52:23,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:52:23,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:52:23,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:52:23,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:52:23,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:52:23,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:52:23,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:52:23,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:52:23,073 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:52:23,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:52:23,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:52:23,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:52:23,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:52:23,073 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_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b185f65b4911b86277862c0855e8bdc8a98e4a [2020-12-09 18:52:23,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:52:23,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:52:23,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:52:23,272 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:52:23,273 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:52:23,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark53_polynomial.i [2020-12-09 18:52:23,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/bin/utaipan/data/2786bf59a/e7c328dadfcc497785f8a5c704414d0c/FLAGf8a397b58 [2020-12-09 18:52:23,668 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:52:23,668 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/sv-benchmarks/c/loop-zilu/benchmark53_polynomial.i [2020-12-09 18:52:23,673 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/bin/utaipan/data/2786bf59a/e7c328dadfcc497785f8a5c704414d0c/FLAGf8a397b58 [2020-12-09 18:52:23,682 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/bin/utaipan/data/2786bf59a/e7c328dadfcc497785f8a5c704414d0c [2020-12-09 18:52:23,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:52:23,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:52:23,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:52:23,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:52:23,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:52:23,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:52:23" (1/1) ... [2020-12-09 18:52:23,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7560563c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:23, skipping insertion in model container [2020-12-09 18:52:23,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:52:23" (1/1) ... [2020-12-09 18:52:23,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:52:23,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:52:23,810 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_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/sv-benchmarks/c/loop-zilu/benchmark53_polynomial.i[872,885] [2020-12-09 18:52:23,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:52:23,825 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:52:23,835 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_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/sv-benchmarks/c/loop-zilu/benchmark53_polynomial.i[872,885] [2020-12-09 18:52:23,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:52:23,848 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:52:23,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:23 WrapperNode [2020-12-09 18:52:23,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:52:23,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:52:23,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:52:23,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:52:23,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:23" (1/1) ... [2020-12-09 18:52:23,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:23" (1/1) ... [2020-12-09 18:52:23,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:52:23,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:52:23,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:52:23,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:52:23,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:23" (1/1) ... [2020-12-09 18:52:23,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:23" (1/1) ... [2020-12-09 18:52:23,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:23" (1/1) ... [2020-12-09 18:52:23,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:23" (1/1) ... [2020-12-09 18:52:23,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:23" (1/1) ... [2020-12-09 18:52:23,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:23" (1/1) ... [2020-12-09 18:52:23,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:23" (1/1) ... [2020-12-09 18:52:23,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:52:23,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:52:23,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:52:23,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:52:23,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/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 [2020-12-09 18:52:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:52:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:52:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:52:23,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:52:24,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:52:24,175 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 18:52:24,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:52:24 BoogieIcfgContainer [2020-12-09 18:52:24,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:52:24,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:52:24,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:52:24,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:52:24,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:52:23" (1/3) ... [2020-12-09 18:52:24,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c5d7c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:52:24, skipping insertion in model container [2020-12-09 18:52:24,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:23" (2/3) ... [2020-12-09 18:52:24,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c5d7c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:52:24, skipping insertion in model container [2020-12-09 18:52:24,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:52:24" (3/3) ... [2020-12-09 18:52:24,185 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark53_polynomial.i [2020-12-09 18:52:24,199 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:52:24,202 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-12-09 18:52:24,212 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-12-09 18:52:24,238 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:52:24,239 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:52:24,239 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:52:24,239 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:52:24,239 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:52:24,239 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:52:24,240 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:52:24,240 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:52:24,254 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-09 18:52:24,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-09 18:52:24,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:52:24,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-12-09 18:52:24,259 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]=== [2020-12-09 18:52:24,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:52:24,264 INFO L82 PathProgramCache]: Analyzing trace with hash 3196, now seen corresponding path program 1 times [2020-12-09 18:52:24,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:52:24,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123415247] [2020-12-09 18:52:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:52:24,346 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 18:52:24,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041644232] [2020-12-09 18:52:24,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/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 [2020-12-09 18:52:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:52:24,386 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:52:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:52:24,397 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:52:24,419 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 18:52:24,419 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 18:52:24,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 18:52:24,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:52:24 BoogieIcfgContainer [2020-12-09 18:52:24,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:52:24,655 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:52:24,655 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:52:24,656 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:52:24,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:52:24" (3/4) ... [2020-12-09 18:52:24,660 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 18:52:24,740 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5bc0a395-6994-4f07-bdd7-9cc6bba7aa34/bin/utaipan/witness.graphml [2020-12-09 18:52:24,740 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:52:24,745 INFO L168 Benchmark]: Toolchain (without parser) took 1056.79 ms. Allocated memory is still 113.2 MB. Free memory was 76.1 MB in the beginning and 50.6 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2020-12-09 18:52:24,747 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 113.2 MB. Free memory is still 92.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:52:24,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.09 ms. Allocated memory is still 113.2 MB. Free memory was 75.9 MB in the beginning and 89.2 MB in the end (delta: -13.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:52:24,751 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.74 ms. Allocated memory is still 113.2 MB. Free memory was 89.2 MB in the beginning and 87.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:52:24,752 INFO L168 Benchmark]: Boogie Preprocessor took 14.22 ms. Allocated memory is still 113.2 MB. Free memory was 87.7 MB in the beginning and 86.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:52:24,753 INFO L168 Benchmark]: RCFGBuilder took 288.78 ms. Allocated memory is still 113.2 MB. Free memory was 86.7 MB in the beginning and 69.1 MB in the end (delta: 17.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-09 18:52:24,754 INFO L168 Benchmark]: TraceAbstraction took 475.63 ms. Allocated memory is still 113.2 MB. Free memory was 68.5 MB in the beginning and 52.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 18:52:24,756 INFO L168 Benchmark]: Witness Printer took 85.46 ms. Allocated memory is still 113.2 MB. Free memory was 52.1 MB in the beginning and 50.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:52:24,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 113.2 MB. Free memory is still 92.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 162.09 ms. Allocated memory is still 113.2 MB. Free memory was 75.9 MB in the beginning and 89.2 MB in the end (delta: -13.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.74 ms. Allocated memory is still 113.2 MB. Free memory was 89.2 MB in the beginning and 87.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.22 ms. Allocated memory is still 113.2 MB. Free memory was 87.7 MB in the beginning and 86.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 288.78 ms. Allocated memory is still 113.2 MB. Free memory was 86.7 MB in the beginning and 69.1 MB in the end (delta: 17.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 475.63 ms. Allocated memory is still 113.2 MB. Free memory was 68.5 MB in the beginning and 52.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 85.46 ms. Allocated memory is still 113.2 MB. Free memory was 52.1 MB in the beginning and 50.6 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: 0.3s, 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...