./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark12_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-zilu/benchmark12_linear.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b17ee119bef1fd8cd5134a7af55c483345112c89dff1a376575e65f669f9d0d6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 19:31:37,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:31:37,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:31:37,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:31:37,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:31:37,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:31:37,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:31:37,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:31:37,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:31:37,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:31:37,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:31:37,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:31:37,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:31:37,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:31:37,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:31:37,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:31:37,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:31:37,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:31:37,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:31:37,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:31:37,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:31:37,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:31:37,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:31:37,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:31:37,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:31:37,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:31:37,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:31:37,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:31:37,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:31:37,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:31:37,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:31:37,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:31:37,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:31:37,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:31:37,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:31:37,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:31:37,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:31:37,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:31:37,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:31:37,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:31:37,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:31:37,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-22 19:31:37,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:31:37,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:31:37,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:31:37,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:31:37,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 19:31:37,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 19:31:37,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:31:37,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:31:37,693 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:31:37,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:31:37,694 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 19:31:37,694 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:31:37,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:31:37,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 19:31:37,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:31:37,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 19:31:37,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 19:31:37,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 19:31:37,695 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-22 19:31:37,695 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 19:31:37,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:31:37,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:31:37,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 19:31:37,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:31:37,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:31:37,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 19:31:37,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:31:37,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:31:37,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 19:31:37,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 19:31:37,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:31:37,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 19:31:37,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 19:31:37,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:31:37,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b17ee119bef1fd8cd5134a7af55c483345112c89dff1a376575e65f669f9d0d6 [2021-12-22 19:31:37,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:31:37,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:31:37,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:31:37,903 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:31:37,903 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:31:37,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark12_linear.i [2021-12-22 19:31:37,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/926fde4db/97c1424e86e9452087464ab3ed154470/FLAGf18614cfc [2021-12-22 19:31:38,261 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:31:38,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark12_linear.i [2021-12-22 19:31:38,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/926fde4db/97c1424e86e9452087464ab3ed154470/FLAGf18614cfc [2021-12-22 19:31:38,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/926fde4db/97c1424e86e9452087464ab3ed154470 [2021-12-22 19:31:38,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:31:38,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:31:38,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:31:38,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:31:38,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:31:38,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:31:38" (1/1) ... [2021-12-22 19:31:38,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40da6109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:38, skipping insertion in model container [2021-12-22 19:31:38,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:31:38" (1/1) ... [2021-12-22 19:31:38,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:31:38,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:31:38,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark12_linear.i[868,881] [2021-12-22 19:31:38,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:31:38,846 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:31:38,853 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark12_linear.i[868,881] [2021-12-22 19:31:38,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:31:38,866 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:31:38,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:38 WrapperNode [2021-12-22 19:31:38,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:31:38,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:31:38,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:31:38,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:31:38,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:38" (1/1) ... [2021-12-22 19:31:38,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:38" (1/1) ... [2021-12-22 19:31:38,887 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2021-12-22 19:31:38,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:31:38,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:31:38,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:31:38,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:31:38,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:38" (1/1) ... [2021-12-22 19:31:38,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:38" (1/1) ... [2021-12-22 19:31:38,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:38" (1/1) ... [2021-12-22 19:31:38,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:38" (1/1) ... [2021-12-22 19:31:38,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:38" (1/1) ... [2021-12-22 19:31:38,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:38" (1/1) ... [2021-12-22 19:31:38,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:38" (1/1) ... [2021-12-22 19:31:38,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:31:38,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:31:38,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:31:38,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:31:38,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:38" (1/1) ... [2021-12-22 19:31:38,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:31:38,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:31:38,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 19:31:38,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 19:31:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 19:31:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 19:31:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:31:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:31:38,990 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:31:38,991 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:31:39,074 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:31:39,077 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:31:39,078 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 19:31:39,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:31:39 BoogieIcfgContainer [2021-12-22 19:31:39,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:31:39,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 19:31:39,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 19:31:39,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 19:31:39,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:31:38" (1/3) ... [2021-12-22 19:31:39,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a488ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:31:39, skipping insertion in model container [2021-12-22 19:31:39,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:38" (2/3) ... [2021-12-22 19:31:39,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a488ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:31:39, skipping insertion in model container [2021-12-22 19:31:39,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:31:39" (3/3) ... [2021-12-22 19:31:39,088 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark12_linear.i [2021-12-22 19:31:39,091 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 19:31:39,092 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 19:31:39,119 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 19:31:39,124 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 19:31:39,124 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 19:31:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:31:39,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 19:31:39,135 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:31:39,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 19:31:39,136 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-22 19:31:39,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:31:39,140 INFO L85 PathProgramCache]: Analyzing trace with hash 889575245, now seen corresponding path program 1 times [2021-12-22 19:31:39,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:31:39,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700413870] [2021-12-22 19:31:39,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:31:39,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:31:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:31:39,224 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:31:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:31:39,257 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:31:39,259 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 19:31:39,260 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2021-12-22 19:31:39,263 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2021-12-22 19:31:39,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 19:31:39,268 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-22 19:31:39,270 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 19:31:39,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:31:39 BoogieIcfgContainer [2021-12-22 19:31:39,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 19:31:39,288 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 19:31:39,288 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 19:31:39,289 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 19:31:39,289 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:31:39" (3/4) ... [2021-12-22 19:31:39,291 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-22 19:31:39,321 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 19:31:39,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 19:31:39,322 INFO L158 Benchmark]: Toolchain (without parser) took 619.55ms. Allocated memory is still 109.1MB. Free memory was 77.5MB in the beginning and 59.9MB in the end (delta: 17.6MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2021-12-22 19:31:39,322 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 81.8MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:31:39,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 162.99ms. Allocated memory is still 109.1MB. Free memory was 77.3MB in the beginning and 86.6MB in the end (delta: -9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 19:31:39,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.85ms. Allocated memory is still 109.1MB. Free memory was 86.1MB in the beginning and 85.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:31:39,323 INFO L158 Benchmark]: Boogie Preprocessor took 10.75ms. Allocated memory is still 109.1MB. Free memory was 85.0MB in the beginning and 83.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:31:39,324 INFO L158 Benchmark]: RCFGBuilder took 181.55ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 74.6MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 19:31:39,324 INFO L158 Benchmark]: TraceAbstraction took 203.37ms. Allocated memory is still 109.1MB. Free memory was 74.1MB in the beginning and 61.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-22 19:31:39,324 INFO L158 Benchmark]: Witness Printer took 33.07ms. Allocated memory is still 109.1MB. Free memory was 61.5MB in the beginning and 59.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:31:39,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 81.8MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 162.99ms. Allocated memory is still 109.1MB. Free memory was 77.3MB in the beginning and 86.6MB in the end (delta: -9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.85ms. Allocated memory is still 109.1MB. Free memory was 86.1MB in the beginning and 85.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 10.75ms. Allocated memory is still 109.1MB. Free memory was 85.0MB in the beginning and 83.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 181.55ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 74.6MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 203.37ms. Allocated memory is still 109.1MB. Free memory was 74.1MB in the beginning and 61.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 33.07ms. Allocated memory is still 109.1MB. Free memory was 61.5MB in the beginning and 59.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 25]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] int t = __VERIFIER_nondet_int(); [L23] COND FALSE !(!(x!=y && y==t)) VAL [t=1, x=2147483647, y=1] [L24] COND TRUE __VERIFIER_nondet_bool() [L25] COND TRUE x>0 VAL [t=1, x=2147483647, y=1] [L25] y+x VAL [t=1, x=2147483647, y=1] - UnprovableResult [Line: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 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, 6 NumberOfCodeBlocks, 6 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! [2021-12-22 19:31:39,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)