./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/floats-cbmc-regression/float-zero-sum1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b99743698ab3c7d4b9a6ed0a9848578e31609919a215161232195dca61aa5c4e --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:31:21,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:31:21,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:31:21,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:31:21,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:31:21,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:31:21,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:31:21,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:31:21,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:31:21,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:31:21,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:31:21,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:31:21,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:31:21,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:31:21,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:31:21,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:31:21,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:31:21,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:31:21,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:31:21,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:31:21,356 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:31:21,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:31:21,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:31:21,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:31:21,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:31:21,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:31:21,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:31:21,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:31:21,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:31:21,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:31:21,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:31:21,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:31:21,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:31:21,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:31:21,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:31:21,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:31:21,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:31:21,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:31:21,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:31:21,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:31:21,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:31:21,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:31:21,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:31:21,396 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:31:21,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:31:21,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:31:21,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:31:21,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:31:21,397 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:31:21,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:31:21,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:31:21,398 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:31:21,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:31:21,399 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:31:21,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:31:21,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:31:21,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:31:21,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:31:21,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:31:21,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:31:21,400 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:31:21,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:31:21,401 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:31:21,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:31:21,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:31:21,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:31:21,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:31:21,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:31:21,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:31:21,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:31:21,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:31:21,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:31:21,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:31:21,403 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:31:21,403 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:31:21,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:31:21,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b99743698ab3c7d4b9a6ed0a9848578e31609919a215161232195dca61aa5c4e [2022-07-19 13:31:21,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:31:21,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:31:21,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:31:21,638 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:31:21,640 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:31:21,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2022-07-19 13:31:21,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1731e516/a0c4912362ba4f0985ccf2e3d3d013f1/FLAGb01c35ec0 [2022-07-19 13:31:22,095 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:31:22,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2022-07-19 13:31:22,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1731e516/a0c4912362ba4f0985ccf2e3d3d013f1/FLAGb01c35ec0 [2022-07-19 13:31:22,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1731e516/a0c4912362ba4f0985ccf2e3d3d013f1 [2022-07-19 13:31:22,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:31:22,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:31:22,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:31:22,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:31:22,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:31:22,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:31:22" (1/1) ... [2022-07-19 13:31:22,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b5d485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:22, skipping insertion in model container [2022-07-19 13:31:22,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:31:22" (1/1) ... [2022-07-19 13:31:22,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:31:22,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:31:22,623 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/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2022-07-19 13:31:22,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:31:22,637 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:31:22,653 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/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2022-07-19 13:31:22,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:31:22,667 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:31:22,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:22 WrapperNode [2022-07-19 13:31:22,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:31:22,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:31:22,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:31:22,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:31:22,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:22" (1/1) ... [2022-07-19 13:31:22,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:22" (1/1) ... [2022-07-19 13:31:22,689 INFO L137 Inliner]: procedures = 17, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2022-07-19 13:31:22,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:31:22,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:31:22,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:31:22,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:31:22,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:22" (1/1) ... [2022-07-19 13:31:22,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:22" (1/1) ... [2022-07-19 13:31:22,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:22" (1/1) ... [2022-07-19 13:31:22,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:22" (1/1) ... [2022-07-19 13:31:22,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:22" (1/1) ... [2022-07-19 13:31:22,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:22" (1/1) ... [2022-07-19 13:31:22,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:22" (1/1) ... [2022-07-19 13:31:22,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:31:22,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:31:22,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:31:22,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:31:22,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:22" (1/1) ... [2022-07-19 13:31:22,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:31:22,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:31:22,742 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) [2022-07-19 13:31:22,800 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 [2022-07-19 13:31:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:31:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:31:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 13:31:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-07-19 13:31:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:31:22,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:31:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 13:31:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 13:31:22,855 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:31:22,856 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:31:22,925 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:31:22,928 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:31:22,929 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:31:22,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:22 BoogieIcfgContainer [2022-07-19 13:31:22,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:31:22,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:31:22,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:31:22,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:31:22,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:31:22" (1/3) ... [2022-07-19 13:31:22,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a520bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:31:22, skipping insertion in model container [2022-07-19 13:31:22,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:22" (2/3) ... [2022-07-19 13:31:22,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a520bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:31:22, skipping insertion in model container [2022-07-19 13:31:22,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:22" (3/3) ... [2022-07-19 13:31:22,936 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2022-07-19 13:31:22,945 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:31:22,945 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:31:22,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:31:22,987 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2f8b4797, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6fe0903f [2022-07-19 13:31:22,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:31:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-07-19 13:31:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-19 13:31:22,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:31:22,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-19 13:31:22,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:31:22,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:31:22,998 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2022-07-19 13:31:23,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:31:23,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456048972] [2022-07-19 13:31:23,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:31:23,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:31:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:31:23,068 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:31:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:31:23,092 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:31:23,094 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:31:23,095 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:31:23,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:31:23,099 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 13:31:23,102 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:31:23,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:31:23 BoogieIcfgContainer [2022-07-19 13:31:23,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:31:23,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:31:23,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:31:23,115 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:31:23,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:22" (3/4) ... [2022-07-19 13:31:23,118 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:31:23,118 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:31:23,119 INFO L158 Benchmark]: Toolchain (without parser) took 669.34ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 58.8MB in the beginning and 70.1MB in the end (delta: -11.3MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2022-07-19 13:31:23,119 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:23,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.39ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 58.6MB in the beginning and 96.2MB in the end (delta: -37.6MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-07-19 13:31:23,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.99ms. Allocated memory is still 121.6MB. Free memory was 95.7MB in the beginning and 94.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:23,121 INFO L158 Benchmark]: Boogie Preprocessor took 26.78ms. Allocated memory is still 121.6MB. Free memory was 94.3MB in the beginning and 93.6MB in the end (delta: 775.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:31:23,121 INFO L158 Benchmark]: RCFGBuilder took 212.02ms. Allocated memory is still 121.6MB. Free memory was 93.6MB in the beginning and 84.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:31:23,122 INFO L158 Benchmark]: TraceAbstraction took 183.47ms. Allocated memory is still 121.6MB. Free memory was 84.3MB in the beginning and 70.6MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-19 13:31:23,122 INFO L158 Benchmark]: Witness Printer took 2.94ms. Allocated memory is still 121.6MB. Free memory was 70.6MB in the beginning and 70.1MB in the end (delta: 470.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:23,124 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.39ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 58.6MB in the beginning and 96.2MB in the end (delta: -37.6MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.99ms. Allocated memory is still 121.6MB. Free memory was 95.7MB in the beginning and 94.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.78ms. Allocated memory is still 121.6MB. Free memory was 94.3MB in the beginning and 93.6MB in the end (delta: 775.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 212.02ms. Allocated memory is still 121.6MB. Free memory was 93.6MB in the beginning and 84.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 183.47ms. Allocated memory is still 121.6MB. Free memory was 84.3MB in the beginning and 70.6MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 2.94ms. Allocated memory is still 121.6MB. Free memory was 70.6MB in the beginning and 70.1MB in the end (delta: 470.1kB). There was no memory consumed. 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 - UnprovableResult [Line: 114]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 111, overapproximation of someUnaryDOUBLEoperation at line 122. Possible FailurePath: [L122] CALL f00(-0x1.6b890ep+29, 0x1.6b890ep+29) [L111] float sum = a + b; [L112] union mix m; [L113] m.f = sum [L114] EXPR m.i VAL [\old(a)=2147483649, \old(b)=762388928, a=2147483649, b=762388928, m={3:0}, m.i=2147483648, sum=2147483650] [L114] COND TRUE !(m.i != 0x80000000) [L114] reach_error() VAL [\old(a)=2147483649, \old(b)=762388928, a=2147483649, b=762388928, m={3:0}, sum=2147483650] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 4 NumberOfCodeBlocks, 4 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 could not prove your program: unable to determine feasibility of some traces [2022-07-19 13:31:23,153 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/floats-cbmc-regression/float-zero-sum1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b99743698ab3c7d4b9a6ed0a9848578e31609919a215161232195dca61aa5c4e --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:31:24,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:31:24,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:31:24,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:31:24,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:31:24,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:31:24,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:31:24,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:31:24,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:31:24,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:31:24,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:31:24,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:31:24,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:31:24,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:31:24,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:31:24,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:31:24,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:31:24,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:31:24,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:31:24,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:31:24,960 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:31:24,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:31:24,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:31:24,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:31:24,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:31:24,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:31:24,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:31:24,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:31:24,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:31:24,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:31:24,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:31:24,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:31:24,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:31:24,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:31:24,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:31:24,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:31:24,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:31:24,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:31:24,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:31:24,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:31:24,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:31:24,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:31:24,972 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:31:25,006 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:31:25,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:31:25,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:31:25,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:31:25,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:31:25,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:31:25,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:31:25,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:31:25,009 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:31:25,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:31:25,010 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:31:25,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:31:25,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:31:25,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:31:25,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:31:25,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:31:25,011 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:31:25,011 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:31:25,011 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:31:25,012 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:31:25,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:31:25,012 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:31:25,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:31:25,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:31:25,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:31:25,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:31:25,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:31:25,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:31:25,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:31:25,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:31:25,014 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:31:25,014 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:31:25,014 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:31:25,014 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:31:25,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:31:25,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:31:25,015 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b99743698ab3c7d4b9a6ed0a9848578e31609919a215161232195dca61aa5c4e [2022-07-19 13:31:25,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:31:25,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:31:25,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:31:25,317 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:31:25,317 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:31:25,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2022-07-19 13:31:25,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e901632c/b554607dbf784607b8830d47d367a9c2/FLAG403ad5a90 [2022-07-19 13:31:25,679 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:31:25,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2022-07-19 13:31:25,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e901632c/b554607dbf784607b8830d47d367a9c2/FLAG403ad5a90 [2022-07-19 13:31:26,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e901632c/b554607dbf784607b8830d47d367a9c2 [2022-07-19 13:31:26,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:31:26,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:31:26,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:31:26,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:31:26,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:31:26,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:31:26" (1/1) ... [2022-07-19 13:31:26,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63ba434a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:26, skipping insertion in model container [2022-07-19 13:31:26,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:31:26" (1/1) ... [2022-07-19 13:31:26,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:31:26,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:31:26,222 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/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2022-07-19 13:31:26,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:31:26,234 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:31:26,248 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/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2022-07-19 13:31:26,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:31:26,273 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:31:26,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:26 WrapperNode [2022-07-19 13:31:26,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:31:26,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:31:26,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:31:26,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:31:26,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:26" (1/1) ... [2022-07-19 13:31:26,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:26" (1/1) ... [2022-07-19 13:31:26,305 INFO L137 Inliner]: procedures = 20, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2022-07-19 13:31:26,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:31:26,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:31:26,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:31:26,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:31:26,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:26" (1/1) ... [2022-07-19 13:31:26,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:26" (1/1) ... [2022-07-19 13:31:26,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:26" (1/1) ... [2022-07-19 13:31:26,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:26" (1/1) ... [2022-07-19 13:31:26,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:26" (1/1) ... [2022-07-19 13:31:26,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:26" (1/1) ... [2022-07-19 13:31:26,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:26" (1/1) ... [2022-07-19 13:31:26,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:31:26,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:31:26,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:31:26,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:31:26,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:26" (1/1) ... [2022-07-19 13:31:26,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:31:26,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:31:26,376 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) [2022-07-19 13:31:26,385 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 [2022-07-19 13:31:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:31:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:31:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 13:31:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-19 13:31:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:31:26,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:31:26,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-07-19 13:31:26,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 13:31:26,496 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:31:26,512 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:31:26,595 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:31:26,599 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:31:26,599 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:31:26,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:26 BoogieIcfgContainer [2022-07-19 13:31:26,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:31:26,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:31:26,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:31:26,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:31:26,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:31:26" (1/3) ... [2022-07-19 13:31:26,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eed1d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:31:26, skipping insertion in model container [2022-07-19 13:31:26,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:26" (2/3) ... [2022-07-19 13:31:26,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eed1d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:31:26, skipping insertion in model container [2022-07-19 13:31:26,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:26" (3/3) ... [2022-07-19 13:31:26,606 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2022-07-19 13:31:26,616 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:31:26,616 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:31:26,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:31:26,685 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e29dacc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3d18a7a7 [2022-07-19 13:31:26,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:31:26,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-07-19 13:31:26,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-19 13:31:26,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:31:26,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-19 13:31:26,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:31:26,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:31:26,714 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2022-07-19 13:31:26,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:31:26,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646809914] [2022-07-19 13:31:26,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:31:26,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:31:26,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:31:26,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:31:26,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 13:31:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:31:26,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 13:31:26,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:31:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:31:26,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:31:26,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:31:26,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646809914] [2022-07-19 13:31:26,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646809914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:31:26,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:31:26,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:31:26,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869560883] [2022-07-19 13:31:26,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:31:26,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 13:31:26,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:31:26,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 13:31:26,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 13:31:26,996 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 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) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-07-19 13:31:27,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:31:27,045 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2022-07-19 13:31:27,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 13:31:27,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2022-07-19 13:31:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:31:27,051 INFO L225 Difference]: With dead ends: 15 [2022-07-19 13:31:27,051 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 13:31:27,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 13:31:27,057 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:31:27,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 10 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:31:27,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 13:31:27,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 13:31:27,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-07-19 13:31:27,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 13:31:27,073 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2022-07-19 13:31:27,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:31:27,079 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 13:31:27,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-07-19 13:31:27,079 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 13:31:27,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 13:31:27,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:31:27,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-19 13:31:27,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:31:27,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 13:31:27,306 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 13:31:27,307 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 13:31:27,307 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 13:31:27,307 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 13:31:27,307 INFO L895 garLoopResultBuilder]: At program point L123(lines 119 124) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2022-07-19 13:31:27,307 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 114) no Hoare annotation was computed. [2022-07-19 13:31:27,308 INFO L895 garLoopResultBuilder]: At program point L116(lines 110 117) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2022-07-19 13:31:27,308 INFO L899 garLoopResultBuilder]: For program point L114(line 114) no Hoare annotation was computed. [2022-07-19 13:31:27,309 INFO L899 garLoopResultBuilder]: For program point L114-1(line 114) no Hoare annotation was computed. [2022-07-19 13:31:27,309 INFO L899 garLoopResultBuilder]: For program point L114-3(line 114) no Hoare annotation was computed. [2022-07-19 13:31:27,311 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 13:31:27,317 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:31:27,323 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-19 13:31:27,326 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-19 13:31:27,327 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-19 13:31:27,327 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-19 13:31:27,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:31:27 BoogieIcfgContainer [2022-07-19 13:31:27,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:31:27,329 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:31:27,329 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:31:27,329 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:31:27,329 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:26" (3/4) ... [2022-07-19 13:31:27,332 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 13:31:27,340 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-19 13:31:27,340 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-07-19 13:31:27,340 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 13:31:27,340 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 13:31:27,368 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 13:31:27,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:31:27,372 INFO L158 Benchmark]: Toolchain (without parser) took 1267.04ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 28.2MB in the beginning and 39.1MB in the end (delta: -10.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:27,372 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 50.3MB. Free memory is still 32.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:27,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.03ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 28.0MB in the beginning and 44.3MB in the end (delta: -16.3MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2022-07-19 13:31:27,373 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.62ms. Allocated memory is still 60.8MB. Free memory was 44.1MB in the beginning and 42.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:27,373 INFO L158 Benchmark]: Boogie Preprocessor took 37.20ms. Allocated memory is still 60.8MB. Free memory was 42.7MB in the beginning and 41.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:31:27,374 INFO L158 Benchmark]: RCFGBuilder took 255.78ms. Allocated memory is still 60.8MB. Free memory was 41.2MB in the beginning and 32.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:31:27,374 INFO L158 Benchmark]: TraceAbstraction took 726.38ms. Allocated memory is still 60.8MB. Free memory was 32.5MB in the beginning and 41.5MB in the end (delta: -9.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:27,374 INFO L158 Benchmark]: Witness Printer took 41.68ms. Allocated memory is still 60.8MB. Free memory was 41.2MB in the beginning and 39.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:31:27,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 50.3MB. Free memory is still 32.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.03ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 28.0MB in the beginning and 44.3MB in the end (delta: -16.3MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.62ms. Allocated memory is still 60.8MB. Free memory was 44.1MB in the beginning and 42.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.20ms. Allocated memory is still 60.8MB. Free memory was 42.7MB in the beginning and 41.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 255.78ms. Allocated memory is still 60.8MB. Free memory was 41.2MB in the beginning and 32.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 726.38ms. Allocated memory is still 60.8MB. Free memory was 32.5MB in the beginning and 41.5MB in the end (delta: -9.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 41.68ms. Allocated memory is still 60.8MB. Free memory was 41.2MB in the beginning and 39.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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 - PositiveResult [Line: 114]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 5 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 9 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 110]: Loop Invariant [2022-07-19 13:31:27,391 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-19 13:31:27,392 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 119]: Loop Invariant [2022-07-19 13:31:27,393 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-19 13:31:27,394 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2022-07-19 13:31:27,417 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 Result: TRUE