./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/addsub_float_inexact.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/float-benchs/addsub_float_inexact.c -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 724458914ec915bd8588c7b3947050b7176e90c12f1440cbedde17891f240f2d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:02:02,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:02:02,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:02:02,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:02:02,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:02:02,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:02:02,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:02:02,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:02:02,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:02:02,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:02:02,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:02:02,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:02:02,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:02:02,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:02:02,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:02:02,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:02:02,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:02:02,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:02:02,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:02:02,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:02:02,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:02:02,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:02:02,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:02:02,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:02:02,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:02:02,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:02:02,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:02:02,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:02:02,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:02:02,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:02:02,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:02:02,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:02:02,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:02:02,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:02:02,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:02:02,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:02:02,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:02:02,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:02:02,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:02:02,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:02:02,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:02:02,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 10:02:02,689 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:02:02,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:02:02,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:02:02,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:02:02,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:02:02,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:02:02,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:02:02,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:02:02,691 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:02:02,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:02:02,692 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:02:02,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 10:02:02,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:02:02,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:02:02,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:02:02,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:02:02,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:02:02,693 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:02:02,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:02:02,693 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:02:02,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:02:02,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:02:02,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:02:02,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:02:02,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:02:02,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:02:02,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:02:02,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:02:02,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 10:02:02,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 10:02:02,695 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:02:02,695 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:02:02,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:02:02,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:02:02,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 724458914ec915bd8588c7b3947050b7176e90c12f1440cbedde17891f240f2d [2021-12-22 10:02:02,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:02:02,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:02:02,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:02:02,903 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:02:02,904 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:02:02,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-12-22 10:02:02,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a459cbb/1003c6d12e64423fadad827d60c2cc30/FLAG75f406da8 [2021-12-22 10:02:03,310 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:02:03,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-12-22 10:02:03,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a459cbb/1003c6d12e64423fadad827d60c2cc30/FLAG75f406da8 [2021-12-22 10:02:03,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a459cbb/1003c6d12e64423fadad827d60c2cc30 [2021-12-22 10:02:03,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:02:03,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:02:03,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:02:03,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:02:03,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:02:03,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:02:03" (1/1) ... [2021-12-22 10:02:03,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48ec17f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:03, skipping insertion in model container [2021-12-22 10:02:03,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:02:03" (1/1) ... [2021-12-22 10:02:03,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:02:03,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:02:03,509 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/float-benchs/addsub_float_inexact.c[394,407] [2021-12-22 10:02:03,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:02:03,534 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:02:03,541 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/float-benchs/addsub_float_inexact.c[394,407] [2021-12-22 10:02:03,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:02:03,552 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:02:03,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:03 WrapperNode [2021-12-22 10:02:03,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:02:03,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:02:03,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:02:03,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:02:03,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:03" (1/1) ... [2021-12-22 10:02:03,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:03" (1/1) ... [2021-12-22 10:02:03,574 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2021-12-22 10:02:03,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:02:03,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:02:03,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:02:03,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:02:03,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:03" (1/1) ... [2021-12-22 10:02:03,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:03" (1/1) ... [2021-12-22 10:02:03,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:03" (1/1) ... [2021-12-22 10:02:03,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:03" (1/1) ... [2021-12-22 10:02:03,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:03" (1/1) ... [2021-12-22 10:02:03,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:03" (1/1) ... [2021-12-22 10:02:03,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:03" (1/1) ... [2021-12-22 10:02:03,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:02:03,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:02:03,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:02:03,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:02:03,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:03" (1/1) ... [2021-12-22 10:02:03,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:02:03,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:02:03,612 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 10:02:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:02:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:02:03,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:02:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 10:02:03,642 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 10:02:03,677 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:02:03,679 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:02:03,740 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:02:03,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:02:03,744 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 10:02:03,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:02:03 BoogieIcfgContainer [2021-12-22 10:02:03,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:02:03,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:02:03,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:02:03,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:02:03,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:02:03" (1/3) ... [2021-12-22 10:02:03,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e130765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:02:03, skipping insertion in model container [2021-12-22 10:02:03,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:03" (2/3) ... [2021-12-22 10:02:03,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e130765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:02:03, skipping insertion in model container [2021-12-22 10:02:03,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:02:03" (3/3) ... [2021-12-22 10:02:03,751 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact.c [2021-12-22 10:02:03,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:02:03,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:02:03,784 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:02:03,789 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=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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 10:02:03,789 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:02:03,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 10:02:03,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-22 10:02:03,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:02:03,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-22 10:02:03,803 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:02:03,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:02:03,807 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-12-22 10:02:03,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:02:03,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361811042] [2021-12-22 10:02:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:02:03,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:02:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:02:03,871 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 10:02:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:02:03,889 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 10:02:03,890 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 10:02:03,891 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 10:02:03,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 10:02:03,896 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-22 10:02:03,898 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 10:02:03,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:02:03 BoogieIcfgContainer [2021-12-22 10:02:03,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 10:02:03,916 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 10:02:03,917 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 10:02:03,917 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 10:02:03,917 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:02:03" (3/4) ... [2021-12-22 10:02:03,919 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 10:02:03,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 10:02:03,921 INFO L158 Benchmark]: Toolchain (without parser) took 579.25ms. Allocated memory is still 102.8MB. Free memory was 66.5MB in the beginning and 54.6MB in the end (delta: 12.0MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2021-12-22 10:02:03,922 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:02:03,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.22ms. Allocated memory is still 102.8MB. Free memory was 66.3MB in the beginning and 79.2MB in the end (delta: -12.9MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2021-12-22 10:02:03,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.99ms. Allocated memory is still 102.8MB. Free memory was 79.2MB in the beginning and 77.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 10:02:03,924 INFO L158 Benchmark]: Boogie Preprocessor took 11.89ms. Allocated memory is still 102.8MB. Free memory was 77.8MB in the beginning and 76.9MB in the end (delta: 936.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:02:03,927 INFO L158 Benchmark]: RCFGBuilder took 156.99ms. Allocated memory is still 102.8MB. Free memory was 76.9MB in the beginning and 68.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 10:02:03,928 INFO L158 Benchmark]: TraceAbstraction took 167.62ms. Allocated memory is still 102.8MB. Free memory was 67.9MB in the beginning and 55.0MB in the end (delta: 12.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-22 10:02:03,929 INFO L158 Benchmark]: Witness Printer took 3.36ms. Allocated memory is still 102.8MB. Free memory was 54.9MB in the beginning and 54.6MB in the end (delta: 295.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:02:03,934 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 102.8MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.22ms. Allocated memory is still 102.8MB. Free memory was 66.3MB in the beginning and 79.2MB in the end (delta: -12.9MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.99ms. Allocated memory is still 102.8MB. Free memory was 79.2MB in the beginning and 77.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.89ms. Allocated memory is still 102.8MB. Free memory was 77.8MB in the beginning and 76.9MB in the end (delta: 936.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 156.99ms. Allocated memory is still 102.8MB. Free memory was 76.9MB in the beginning and 68.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 167.62ms. Allocated memory is still 102.8MB. Free memory was 67.9MB in the beginning and 55.0MB in the end (delta: 12.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 3.36ms. Allocated memory is still 102.8MB. Free memory was 54.9MB in the beginning and 54.6MB in the end (delta: 295.9kB). 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: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 16, overapproximation of someBinaryArithmeticFLOAToperation at line 13. Possible FailurePath: [L10] float x, y, z, r; [L12] x = 1e8f [L13] y = x + 1.f [L14] z = x - 1.f [L15] r = y - z [L16] CALL __VERIFIER_assert(r == 0.f) [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 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, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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 [2021-12-22 10:02:03,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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/float-benchs/addsub_float_inexact.c -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 724458914ec915bd8588c7b3947050b7176e90c12f1440cbedde17891f240f2d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:02:05,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:02:05,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:02:05,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:02:05,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:02:05,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:02:05,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:02:05,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:02:05,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:02:05,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:02:05,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:02:05,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:02:05,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:02:05,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:02:05,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:02:05,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:02:05,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:02:05,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:02:05,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:02:05,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:02:05,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:02:05,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:02:05,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:02:05,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:02:05,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:02:05,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:02:05,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:02:05,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:02:05,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:02:05,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:02:05,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:02:05,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:02:05,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:02:05,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:02:05,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:02:05,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:02:05,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:02:05,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:02:05,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:02:05,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:02:05,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:02:05,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 10:02:05,927 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:02:05,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:02:05,928 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:02:05,928 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:02:05,929 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:02:05,929 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:02:05,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:02:05,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:02:05,931 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:02:05,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:02:05,931 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:02:05,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:02:05,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:02:05,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:02:05,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:02:05,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:02:05,932 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 10:02:05,932 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 10:02:05,932 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 10:02:05,933 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:02:05,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:02:05,933 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:02:05,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:02:05,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:02:05,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:02:05,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:02:05,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:02:05,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:02:05,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:02:05,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:02:05,934 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 10:02:05,934 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 10:02:05,935 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:02:05,935 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:02:05,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:02:05,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:02:05,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 10:02:05,935 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 724458914ec915bd8588c7b3947050b7176e90c12f1440cbedde17891f240f2d [2021-12-22 10:02:06,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:02:06,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:02:06,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:02:06,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:02:06,238 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:02:06,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-12-22 10:02:06,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f74259f7/bc58bace2047407dba726b859fc17b81/FLAG41dd0508c [2021-12-22 10:02:06,577 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:02:06,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-12-22 10:02:06,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f74259f7/bc58bace2047407dba726b859fc17b81/FLAG41dd0508c [2021-12-22 10:02:07,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f74259f7/bc58bace2047407dba726b859fc17b81 [2021-12-22 10:02:07,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:02:07,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:02:07,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:02:07,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:02:07,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:02:07,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:02:07" (1/1) ... [2021-12-22 10:02:07,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4658e4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:07, skipping insertion in model container [2021-12-22 10:02:07,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:02:07" (1/1) ... [2021-12-22 10:02:07,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:02:07,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:02:07,175 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/float-benchs/addsub_float_inexact.c[394,407] [2021-12-22 10:02:07,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:02:07,197 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:02:07,207 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/float-benchs/addsub_float_inexact.c[394,407] [2021-12-22 10:02:07,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:02:07,219 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:02:07,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:07 WrapperNode [2021-12-22 10:02:07,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:02:07,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:02:07,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:02:07,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:02:07,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:07" (1/1) ... [2021-12-22 10:02:07,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:07" (1/1) ... [2021-12-22 10:02:07,247 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2021-12-22 10:02:07,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:02:07,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:02:07,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:02:07,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:02:07,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:07" (1/1) ... [2021-12-22 10:02:07,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:07" (1/1) ... [2021-12-22 10:02:07,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:07" (1/1) ... [2021-12-22 10:02:07,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:07" (1/1) ... [2021-12-22 10:02:07,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:07" (1/1) ... [2021-12-22 10:02:07,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:07" (1/1) ... [2021-12-22 10:02:07,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:07" (1/1) ... [2021-12-22 10:02:07,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:02:07,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:02:07,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:02:07,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:02:07,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:07" (1/1) ... [2021-12-22 10:02:07,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:02:07,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:02:07,337 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 10:02:07,355 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 10:02:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:02:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:02:07,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:02:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 10:02:07,420 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:02:07,421 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:02:07,612 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:02:07,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:02:07,616 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 10:02:07,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:02:07 BoogieIcfgContainer [2021-12-22 10:02:07,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:02:07,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:02:07,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:02:07,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:02:07,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:02:07" (1/3) ... [2021-12-22 10:02:07,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b8e19d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:02:07, skipping insertion in model container [2021-12-22 10:02:07,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:07" (2/3) ... [2021-12-22 10:02:07,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b8e19d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:02:07, skipping insertion in model container [2021-12-22 10:02:07,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:02:07" (3/3) ... [2021-12-22 10:02:07,621 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact.c [2021-12-22 10:02:07,638 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:02:07,638 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:02:07,699 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:02:07,705 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=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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 10:02:07,705 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:02:07,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 10:02:07,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-22 10:02:07,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:02:07,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-22 10:02:07,746 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:02:07,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:02:07,760 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-12-22 10:02:07,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:02:07,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540983219] [2021-12-22 10:02:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:02:07,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:02:07,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:02:07,781 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) [2021-12-22 10:02:07,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 10:02:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:02:07,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 10:02:07,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:02:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:02:07,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:02:07,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:02:07,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540983219] [2021-12-22 10:02:07,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540983219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:02:07,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:02:07,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 10:02:07,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999423382] [2021-12-22 10:02:07,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:02:08,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 10:02:08,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:02:08,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 10:02:08,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 10:02:08,027 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-12-22 10:02:08,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:02:08,105 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-12-22 10:02:08,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 10:02:08,111 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 [2021-12-22 10:02:08,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:02:08,115 INFO L225 Difference]: With dead ends: 13 [2021-12-22 10:02:08,116 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 10:02:08,118 INFO L932 BasicCegarLoop]: 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 [2021-12-22 10:02:08,122 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 10:02:08,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 5 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 10:02:08,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 10:02:08,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 10:02:08,139 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) [2021-12-22 10:02:08,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 10:02:08,140 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-12-22 10:02:08,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:02:08,141 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 10:02:08,141 INFO L471 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) [2021-12-22 10:02:08,141 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 10:02:08,141 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 10:02:08,143 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 10:02:08,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-22 10:02:08,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:02:08,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-22 10:02:08,372 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-22 10:02:08,372 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-22 10:02:08,373 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-22 10:02:08,373 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-22 10:02:08,373 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2021-12-22 10:02:08,373 INFO L854 garLoopResultBuilder]: At program point L17(lines 8 18) the Hoare annotation is: (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven)) [2021-12-22 10:02:08,373 INFO L858 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-12-22 10:02:08,374 INFO L858 garLoopResultBuilder]: For program point L6-1(line 6) no Hoare annotation was computed. [2021-12-22 10:02:08,374 INFO L854 garLoopResultBuilder]: At program point L6-3(line 6) the Hoare annotation is: (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven)) [2021-12-22 10:02:08,376 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-22 10:02:08,377 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 10:02:08,384 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:02:08,386 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:02:08,387 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:02:08,388 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:02:08,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:02:08 BoogieIcfgContainer [2021-12-22 10:02:08,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 10:02:08,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 10:02:08,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 10:02:08,389 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 10:02:08,390 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:02:07" (3/4) ... [2021-12-22 10:02:08,392 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 10:02:08,398 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-22 10:02:08,399 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-22 10:02:08,399 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 10:02:08,399 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 10:02:08,419 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 10:02:08,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 10:02:08,420 INFO L158 Benchmark]: Toolchain (without parser) took 1391.36ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.2MB in the beginning and 47.6MB in the end (delta: -12.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:02:08,421 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 56.6MB. Free memory was 37.4MB in the beginning and 37.4MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:02:08,421 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.79ms. Allocated memory is still 56.6MB. Free memory was 35.0MB in the beginning and 38.9MB in the end (delta: -3.9MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2021-12-22 10:02:08,422 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.58ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 39.9MB in the end (delta: -929.6kB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2021-12-22 10:02:08,422 INFO L158 Benchmark]: Boogie Preprocessor took 46.34ms. Allocated memory is still 56.6MB. Free memory was 39.7MB in the beginning and 38.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 10:02:08,422 INFO L158 Benchmark]: RCFGBuilder took 321.58ms. Allocated memory is still 56.6MB. Free memory was 38.6MB in the beginning and 31.0MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 10:02:08,423 INFO L158 Benchmark]: TraceAbstraction took 770.80ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 30.5MB in the beginning and 49.9MB in the end (delta: -19.4MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2021-12-22 10:02:08,423 INFO L158 Benchmark]: Witness Printer took 30.85ms. Allocated memory is still 69.2MB. Free memory was 49.9MB in the beginning and 47.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 10:02:08,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 56.6MB. Free memory was 37.4MB in the beginning and 37.4MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.79ms. Allocated memory is still 56.6MB. Free memory was 35.0MB in the beginning and 38.9MB in the end (delta: -3.9MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.58ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 39.9MB in the end (delta: -929.6kB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.34ms. Allocated memory is still 56.6MB. Free memory was 39.7MB in the beginning and 38.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 321.58ms. Allocated memory is still 56.6MB. Free memory was 38.6MB in the beginning and 31.0MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 770.80ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 30.5MB in the beginning and 49.9MB in the end (delta: -19.4MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Witness Printer took 30.85ms. Allocated memory is still 69.2MB. Free memory was 49.9MB in the beginning and 47.6MB in the end (delta: 2.3MB). 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: 6]: 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, 9 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, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 4 mSDtfsCounter, 2 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=9occurred 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, 14 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 6 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 8 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: 6]: Loop Invariant [2021-12-22 10:02:08,432 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:02:08,433 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: cond == 1bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 8]: Loop Invariant [2021-12-22 10:02:08,433 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-22 10:02:08,433 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: cond == 1bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-12-22 10:02:08,458 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