./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0730b.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-newlib/double_req_bl_0730b.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 05e2baf38cd0eae96e398823454df9c6d2eba699137545e6490e497cf90c6efe --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:13:55,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:13:55,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:13:55,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:13:55,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:13:55,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:13:55,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:13:55,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:13:55,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:13:55,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:13:55,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:13:55,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:13:55,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:13:55,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:13:55,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:13:55,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:13:55,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:13:55,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:13:55,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:13:55,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:13:55,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:13:55,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:13:55,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:13:55,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:13:55,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:13:55,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:13:55,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:13:55,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:13:55,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:13:55,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:13:55,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:13:55,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:13:55,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:13:55,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:13:55,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:13:55,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:13:55,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:13:55,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:13:55,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:13:55,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:13:55,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:13:55,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 10:13:55,448 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:13:55,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:13:55,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:13:55,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:13:55,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:13:55,450 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:13:55,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:13:55,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:13:55,451 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:13:55,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:13:55,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:13:55,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 10:13:55,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:13:55,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:13:55,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:13:55,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:13:55,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:13:55,453 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:13:55,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:13:55,454 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:13:55,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:13:55,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:13:55,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:13:55,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:13:55,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:13:55,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:13:55,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:13:55,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:13:55,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 10:13:55,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 10:13:55,456 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:13:55,456 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:13:55,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:13:55,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:13:55,456 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05e2baf38cd0eae96e398823454df9c6d2eba699137545e6490e497cf90c6efe [2021-12-22 10:13:55,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:13:55,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:13:55,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:13:55,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:13:55,697 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:13:55,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2021-12-22 10:13:55,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626c1aac6/62a7ac6d74d84c1a87b6a97dde0c2060/FLAGce7efea38 [2021-12-22 10:13:56,122 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:13:56,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2021-12-22 10:13:56,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626c1aac6/62a7ac6d74d84c1a87b6a97dde0c2060/FLAGce7efea38 [2021-12-22 10:13:56,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626c1aac6/62a7ac6d74d84c1a87b6a97dde0c2060 [2021-12-22 10:13:56,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:13:56,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:13:56,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:13:56,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:13:56,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:13:56,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:13:56" (1/1) ... [2021-12-22 10:13:56,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19576d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:13:56, skipping insertion in model container [2021-12-22 10:13:56,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:13:56" (1/1) ... [2021-12-22 10:13:56,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:13:56,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:13:56,377 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-newlib/double_req_bl_0730b.c[3225,3238] [2021-12-22 10:13:56,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:13:56,388 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:13:56,430 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-newlib/double_req_bl_0730b.c[3225,3238] [2021-12-22 10:13:56,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:13:56,450 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:13:56,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:13:56 WrapperNode [2021-12-22 10:13:56,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:13:56,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:13:56,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:13:56,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:13:56,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:13:56" (1/1) ... [2021-12-22 10:13:56,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:13:56" (1/1) ... [2021-12-22 10:13:56,500 INFO L137 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 180 [2021-12-22 10:13:56,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:13:56,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:13:56,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:13:56,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:13:56,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:13:56" (1/1) ... [2021-12-22 10:13:56,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:13:56" (1/1) ... [2021-12-22 10:13:56,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:13:56" (1/1) ... [2021-12-22 10:13:56,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:13:56" (1/1) ... [2021-12-22 10:13:56,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:13:56" (1/1) ... [2021-12-22 10:13:56,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:13:56" (1/1) ... [2021-12-22 10:13:56,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:13:56" (1/1) ... [2021-12-22 10:13:56,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:13:56,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:13:56,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:13:56,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:13:56,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:13:56" (1/1) ... [2021-12-22 10:13:56,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:13:56,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:13:56,574 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 10:13:56,628 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 10:13:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:13:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 10:13:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 10:13:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-22 10:13:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 10:13:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-22 10:13:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:13:56,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:13:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 10:13:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 10:13:56,718 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:13:56,720 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:13:57,032 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:13:57,038 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:13:57,042 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-22 10:13:57,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:13:57 BoogieIcfgContainer [2021-12-22 10:13:57,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:13:57,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:13:57,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:13:57,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:13:57,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:13:56" (1/3) ... [2021-12-22 10:13:57,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fdc5c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:13:57, skipping insertion in model container [2021-12-22 10:13:57,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:13:56" (2/3) ... [2021-12-22 10:13:57,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fdc5c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:13:57, skipping insertion in model container [2021-12-22 10:13:57,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:13:57" (3/3) ... [2021-12-22 10:13:57,053 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2021-12-22 10:13:57,058 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:13:57,058 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:13:57,106 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:13:57,114 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 10:13:57,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:13:57,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 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 10:13:57,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 10:13:57,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:13:57,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:13:57,138 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:13:57,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:13:57,143 INFO L85 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2021-12-22 10:13:57,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:13:57,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924965489] [2021-12-22 10:13:57,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:13:57,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:13:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:13:57,283 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 10:13:57,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 10:13:57,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924965489] [2021-12-22 10:13:57,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924965489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:13:57,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:13:57,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 10:13:57,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388366877] [2021-12-22 10:13:57,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:13:57,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 10:13:57,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 10:13:57,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 10:13:57,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:13:57,320 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 10:13:57,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:13:57,344 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2021-12-22 10:13:57,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 10:13:57,346 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-12-22 10:13:57,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:13:57,352 INFO L225 Difference]: With dead ends: 104 [2021-12-22 10:13:57,352 INFO L226 Difference]: Without dead ends: 50 [2021-12-22 10:13:57,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:13:57,358 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 10:13:57,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 10:13:57,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-22 10:13:57,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-12-22 10:13:57,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 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 10:13:57,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2021-12-22 10:13:57,385 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2021-12-22 10:13:57,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:13:57,386 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2021-12-22 10:13:57,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 10:13:57,386 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2021-12-22 10:13:57,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 10:13:57,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:13:57,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:13:57,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 10:13:57,387 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:13:57,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:13:57,388 INFO L85 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2021-12-22 10:13:57,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:13:57,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426412429] [2021-12-22 10:13:57,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:13:57,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:13:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:13:57,411 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 10:13:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:13:57,436 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 10:13:57,437 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 10:13:57,438 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 10:13:57,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 10:13:57,442 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-22 10:13:57,443 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 10:13:57,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:13:57 BoogieIcfgContainer [2021-12-22 10:13:57,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 10:13:57,476 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 10:13:57,476 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 10:13:57,476 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 10:13:57,477 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:13:57" (3/4) ... [2021-12-22 10:13:57,479 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 10:13:57,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 10:13:57,480 INFO L158 Benchmark]: Toolchain (without parser) took 1338.94ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 67.4MB in the beginning and 75.4MB in the end (delta: -7.9MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2021-12-22 10:13:57,480 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 55.1MB in the beginning and 55.1MB in the end (delta: 43.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:13:57,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.36ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 67.3MB in the beginning and 91.4MB in the end (delta: -24.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 10:13:57,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.08ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 88.9MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 10:13:57,481 INFO L158 Benchmark]: Boogie Preprocessor took 47.19ms. Allocated memory is still 117.4MB. Free memory was 88.9MB in the beginning and 87.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:13:57,482 INFO L158 Benchmark]: RCFGBuilder took 495.29ms. Allocated memory is still 117.4MB. Free memory was 87.3MB in the beginning and 71.0MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-22 10:13:57,482 INFO L158 Benchmark]: TraceAbstraction took 429.30ms. Allocated memory is still 117.4MB. Free memory was 70.4MB in the beginning and 75.9MB in the end (delta: -5.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:13:57,482 INFO L158 Benchmark]: Witness Printer took 3.38ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 75.4MB in the end (delta: 524.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 10:13:57,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 55.1MB in the beginning and 55.1MB in the end (delta: 43.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 310.36ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 67.3MB in the beginning and 91.4MB in the end (delta: -24.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.08ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 88.9MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.19ms. Allocated memory is still 117.4MB. Free memory was 88.9MB in the beginning and 87.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 495.29ms. Allocated memory is still 117.4MB. Free memory was 87.3MB in the beginning and 71.0MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 429.30ms. Allocated memory is still 117.4MB. Free memory was 70.4MB in the beginning and 75.9MB in the end (delta: -5.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.38ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 75.4MB in the end (delta: 524.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 156]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 151, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 155. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L151] double x = -0.0; [L152] CALL, EXPR __ieee754_sqrt(x) [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [\old(x)=4294967296, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967296] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [\old(x)=4294967296, ix0=-1, ix1=4294967297, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967296] [L152] RET, EXPR __ieee754_sqrt(x) [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1, res=4294967298, res == -0.0 && __signbit_double(res) == 1=0, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967296] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L156] reach_error() VAL [one_sqrt=1, res=4294967298, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967296] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, 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, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 73 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 73 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, InterpolantAutomatonStates: 2, 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-22 10:13:57,526 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/float-newlib/double_req_bl_0730b.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 05e2baf38cd0eae96e398823454df9c6d2eba699137545e6490e497cf90c6efe --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:13:59,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:13:59,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:13:59,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:13:59,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:13:59,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:13:59,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:13:59,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:13:59,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:13:59,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:13:59,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:13:59,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:13:59,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:13:59,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:13:59,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:13:59,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:13:59,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:13:59,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:13:59,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:13:59,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:13:59,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:13:59,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:13:59,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:13:59,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:13:59,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:13:59,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:13:59,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:13:59,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:13:59,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:13:59,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:13:59,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:13:59,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:13:59,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:13:59,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:13:59,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:13:59,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:13:59,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:13:59,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:13:59,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:13:59,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:13:59,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:13:59,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 10:13:59,509 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:13:59,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:13:59,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:13:59,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:13:59,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:13:59,512 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:13:59,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:13:59,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:13:59,513 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:13:59,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:13:59,514 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:13:59,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:13:59,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:13:59,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:13:59,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:13:59,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:13:59,515 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 10:13:59,515 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 10:13:59,515 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 10:13:59,515 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:13:59,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:13:59,516 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:13:59,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:13:59,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:13:59,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:13:59,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:13:59,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:13:59,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:13:59,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:13:59,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:13:59,524 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 10:13:59,524 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 10:13:59,524 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:13:59,524 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:13:59,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:13:59,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:13:59,525 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 10:13:59,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05e2baf38cd0eae96e398823454df9c6d2eba699137545e6490e497cf90c6efe [2021-12-22 10:13:59,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:13:59,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:13:59,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:13:59,824 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:13:59,825 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:13:59,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2021-12-22 10:13:59,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9edde174/1767b1d7b6b948998e73b7ee3f6982bf/FLAG11c453864 [2021-12-22 10:14:00,244 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:14:00,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2021-12-22 10:14:00,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9edde174/1767b1d7b6b948998e73b7ee3f6982bf/FLAG11c453864 [2021-12-22 10:14:00,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9edde174/1767b1d7b6b948998e73b7ee3f6982bf [2021-12-22 10:14:00,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:14:00,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:14:00,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:14:00,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:14:00,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:14:00,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:14:00" (1/1) ... [2021-12-22 10:14:00,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@852cf19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:00, skipping insertion in model container [2021-12-22 10:14:00,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:14:00" (1/1) ... [2021-12-22 10:14:00,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:14:00,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:14:00,806 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-newlib/double_req_bl_0730b.c[3225,3238] [2021-12-22 10:14:00,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:14:00,829 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:14:00,868 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-newlib/double_req_bl_0730b.c[3225,3238] [2021-12-22 10:14:00,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:14:00,886 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:14:00,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:00 WrapperNode [2021-12-22 10:14:00,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:14:00,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:14:00,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:14:00,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:14:00,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:00" (1/1) ... [2021-12-22 10:14:00,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:00" (1/1) ... [2021-12-22 10:14:00,943 INFO L137 Inliner]: procedures = 20, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 180 [2021-12-22 10:14:00,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:14:00,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:14:00,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:14:00,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:14:00,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:00" (1/1) ... [2021-12-22 10:14:00,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:00" (1/1) ... [2021-12-22 10:14:00,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:00" (1/1) ... [2021-12-22 10:14:00,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:00" (1/1) ... [2021-12-22 10:14:00,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:00" (1/1) ... [2021-12-22 10:14:00,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:00" (1/1) ... [2021-12-22 10:14:00,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:00" (1/1) ... [2021-12-22 10:14:00,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:14:00,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:14:00,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:14:00,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:14:00,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:00" (1/1) ... [2021-12-22 10:14:01,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:14:01,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:14:01,037 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 10:14:01,064 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 10:14:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:14:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-22 10:14:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-22 10:14:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 10:14:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 10:14:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-22 10:14:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:14:01,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:14:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-22 10:14:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 10:14:01,143 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:14:01,144 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:14:03,269 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:14:03,274 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:14:03,274 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-22 10:14:03,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:14:03 BoogieIcfgContainer [2021-12-22 10:14:03,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:14:03,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:14:03,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:14:03,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:14:03,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:14:00" (1/3) ... [2021-12-22 10:14:03,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d983d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:14:03, skipping insertion in model container [2021-12-22 10:14:03,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:00" (2/3) ... [2021-12-22 10:14:03,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d983d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:14:03, skipping insertion in model container [2021-12-22 10:14:03,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:14:03" (3/3) ... [2021-12-22 10:14:03,292 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2021-12-22 10:14:03,296 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:14:03,296 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:14:03,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:14:03,353 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 10:14:03,353 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:14:03,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 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 10:14:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 10:14:03,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:14:03,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:14:03,369 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:14:03,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:14:03,377 INFO L85 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2021-12-22 10:14:03,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:14:03,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266098033] [2021-12-22 10:14:03,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:14:03,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:14:03,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:14:03,388 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 10:14:03,416 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 10:14:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:14:03,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 10:14:03,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:14:03,752 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 10:14:03,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:14:03,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:14:03,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266098033] [2021-12-22 10:14:03,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266098033] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:14:03,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:14:03,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 10:14:03,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972896520] [2021-12-22 10:14:03,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:14:03,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 10:14:03,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:14:03,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 10:14:03,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:14:03,792 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 10:14:03,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:14:03,805 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2021-12-22 10:14:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 10:14:03,807 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-12-22 10:14:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:14:03,825 INFO L225 Difference]: With dead ends: 104 [2021-12-22 10:14:03,825 INFO L226 Difference]: Without dead ends: 50 [2021-12-22 10:14:03,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:14:03,830 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 10:14:03,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 10:14:03,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-22 10:14:03,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-12-22 10:14:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 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 10:14:03,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2021-12-22 10:14:03,872 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2021-12-22 10:14:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:14:03,873 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2021-12-22 10:14:03,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 10:14:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2021-12-22 10:14:03,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 10:14:03,874 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:14:03,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:14:03,889 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 10:14:04,090 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 10:14:04,090 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:14:04,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:14:04,091 INFO L85 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2021-12-22 10:14:04,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:14:04,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959232524] [2021-12-22 10:14:04,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:14:04,092 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:14:04,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:14:04,108 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:14:04,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-22 10:14:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:14:04,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 10:14:04,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:14:04,662 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 10:14:04,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:14:04,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:14:04,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959232524] [2021-12-22 10:14:04,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959232524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:14:04,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:14:04,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 10:14:04,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060991671] [2021-12-22 10:14:04,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:14:04,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 10:14:04,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:14:04,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 10:14:04,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 10:14:04,665 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 10:14:05,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:14:05,646 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2021-12-22 10:14:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 10:14:05,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Word has length 9 [2021-12-22 10:14:05,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:14:05,872 INFO L225 Difference]: With dead ends: 59 [2021-12-22 10:14:05,872 INFO L226 Difference]: Without dead ends: 50 [2021-12-22 10:14:05,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 10:14:05,874 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 2 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 10:14:05,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 167 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 30 Unchecked, 0.9s Time] [2021-12-22 10:14:05,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-22 10:14:05,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-12-22 10:14:05,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 49 states have internal predecessors, (69), 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 10:14:05,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2021-12-22 10:14:05,879 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 9 [2021-12-22 10:14:05,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:14:05,879 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2021-12-22 10:14:05,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 10:14:05,880 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2021-12-22 10:14:05,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 10:14:05,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:14:05,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:14:05,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-22 10:14:06,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:14:06,099 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:14:06,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:14:06,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2021-12-22 10:14:06,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:14:06,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652004317] [2021-12-22 10:14:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:14:06,100 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:14:06,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:14:06,105 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:14:06,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-22 10:14:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:14:06,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 10:14:06,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:14:06,557 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 10:14:06,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:14:06,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:14:06,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652004317] [2021-12-22 10:14:06,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652004317] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:14:06,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:14:06,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 10:14:06,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373492414] [2021-12-22 10:14:06,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:14:06,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 10:14:06,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:14:06,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 10:14:06,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 10:14:06,560 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 10:14:08,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:14:08,290 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2021-12-22 10:14:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 10:14:08,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2021-12-22 10:14:08,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:14:08,291 INFO L225 Difference]: With dead ends: 62 [2021-12-22 10:14:08,292 INFO L226 Difference]: Without dead ends: 59 [2021-12-22 10:14:08,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 10:14:08,293 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 84 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 10:14:08,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 188 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 10:14:08,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-22 10:14:08,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2021-12-22 10:14:08,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.392156862745098) internal successors, (71), 51 states have internal predecessors, (71), 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 10:14:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-12-22 10:14:08,305 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 11 [2021-12-22 10:14:08,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:14:08,305 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-12-22 10:14:08,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 10:14:08,306 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2021-12-22 10:14:08,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-22 10:14:08,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:14:08,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:14:08,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-22 10:14:08,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:14:08,512 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:14:08,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:14:08,512 INFO L85 PathProgramCache]: Analyzing trace with hash 239121058, now seen corresponding path program 1 times [2021-12-22 10:14:08,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:14:08,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453507896] [2021-12-22 10:14:08,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:14:08,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:14:08,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:14:08,514 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:14:08,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-22 10:14:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:14:09,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 10:14:09,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:14:09,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-22 10:14:09,832 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 10:14:09,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:14:09,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:14:09,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453507896] [2021-12-22 10:14:09,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453507896] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:14:09,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:14:09,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 10:14:09,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147919922] [2021-12-22 10:14:09,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:14:09,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 10:14:09,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:14:09,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 10:14:09,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 10:14:09,834 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 10:14:10,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:14:10,014 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2021-12-22 10:14:10,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 10:14:10,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-12-22 10:14:10,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:14:10,016 INFO L225 Difference]: With dead ends: 94 [2021-12-22 10:14:10,016 INFO L226 Difference]: Without dead ends: 51 [2021-12-22 10:14:10,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 10:14:10,017 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 10:14:10,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 143 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2021-12-22 10:14:10,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-22 10:14:10,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-12-22 10:14:10,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 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 10:14:10,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2021-12-22 10:14:10,021 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 12 [2021-12-22 10:14:10,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:14:10,021 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2021-12-22 10:14:10,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 10:14:10,022 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2021-12-22 10:14:10,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-22 10:14:10,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:14:10,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:14:10,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-22 10:14:10,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:14:10,240 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:14:10,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:14:10,241 INFO L85 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2021-12-22 10:14:10,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:14:10,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559167706] [2021-12-22 10:14:10,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:14:10,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:14:10,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:14:10,244 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:14:10,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-22 10:14:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:14:10,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 10:14:10,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:14:11,200 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 10:14:11,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:14:11,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:14:11,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559167706] [2021-12-22 10:14:11,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559167706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:14:11,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:14:11,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 10:14:11,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763280401] [2021-12-22 10:14:11,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:14:11,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 10:14:11,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:14:11,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 10:14:11,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 10:14:11,202 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 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 10:14:12,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:14:12,301 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2021-12-22 10:14:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 10:14:12,301 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 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 15 [2021-12-22 10:14:12,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:14:12,302 INFO L225 Difference]: With dead ends: 61 [2021-12-22 10:14:12,302 INFO L226 Difference]: Without dead ends: 51 [2021-12-22 10:14:12,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-12-22 10:14:12,303 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 77 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 10:14:12,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 413 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 8 Unchecked, 0.4s Time] [2021-12-22 10:14:12,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-22 10:14:12,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2021-12-22 10:14:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 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 10:14:12,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2021-12-22 10:14:12,308 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 15 [2021-12-22 10:14:12,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:14:12,308 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2021-12-22 10:14:12,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 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 10:14:12,308 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2021-12-22 10:14:12,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-22 10:14:12,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:14:12,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:14:12,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-22 10:14:12,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:14:12,512 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:14:12,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:14:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash -677910631, now seen corresponding path program 1 times [2021-12-22 10:14:12,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:14:12,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461772858] [2021-12-22 10:14:12,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:14:12,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:14:12,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:14:12,515 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:14:12,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-22 10:14:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:14:12,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 10:14:12,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:14:12,953 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 10:14:12,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:14:12,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:14:12,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461772858] [2021-12-22 10:14:12,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461772858] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:14:12,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:14:12,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 10:14:12,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564086385] [2021-12-22 10:14:12,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:14:12,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 10:14:12,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:14:12,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 10:14:12,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 10:14:12,955 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 10:14:13,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:14:13,031 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2021-12-22 10:14:13,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 10:14:13,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 25 [2021-12-22 10:14:13,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:14:13,032 INFO L225 Difference]: With dead ends: 48 [2021-12-22 10:14:13,032 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 10:14:13,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 10:14:13,033 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 10:14:13,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 5 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 2 Unchecked, 0.0s Time] [2021-12-22 10:14:13,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 10:14:13,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 10:14:13,034 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 10:14:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 10:14:13,034 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-12-22 10:14:13,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:14:13,034 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 10:14:13,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 10:14:13,034 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 10:14:13,034 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 10:14:13,036 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 10:14:13,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-22 10:14:13,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:14:13,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-22 10:14:13,852 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 63) no Hoare annotation was computed. [2021-12-22 10:14:13,852 INFO L858 garLoopResultBuilder]: For program point L27-1(lines 27 32) no Hoare annotation was computed. [2021-12-22 10:14:13,852 INFO L858 garLoopResultBuilder]: For program point L60-2(lines 60 63) no Hoare annotation was computed. [2021-12-22 10:14:13,852 INFO L854 garLoopResultBuilder]: At program point L27-2(lines 27 32) the Hoare annotation is: (and (= |ULTIMATE.start___ieee754_sqrt_~sign~0#1| (_ bv2147483648 32)) (= |ULTIMATE.start___ieee754_sqrt_~x#1| (fp.neg (_ +zero 11 53)))) [2021-12-22 10:14:13,852 INFO L858 garLoopResultBuilder]: For program point L27-3(lines 21 129) no Hoare annotation was computed. [2021-12-22 10:14:13,853 INFO L858 garLoopResultBuilder]: For program point L52-2(lines 52 53) no Hoare annotation was computed. [2021-12-22 10:14:13,853 INFO L854 garLoopResultBuilder]: At program point L52-3(lines 52 53) the Hoare annotation is: false [2021-12-22 10:14:13,853 INFO L858 garLoopResultBuilder]: For program point L52-4(lines 52 53) no Hoare annotation was computed. [2021-12-22 10:14:13,853 INFO L858 garLoopResultBuilder]: For program point L110(lines 110 111) no Hoare annotation was computed. [2021-12-22 10:14:13,853 INFO L858 garLoopResultBuilder]: For program point L110-2(lines 110 111) no Hoare annotation was computed. [2021-12-22 10:14:13,853 INFO L858 garLoopResultBuilder]: For program point L102(lines 102 116) no Hoare annotation was computed. [2021-12-22 10:14:13,853 INFO L861 garLoopResultBuilder]: At program point L160(lines 143 161) the Hoare annotation is: true [2021-12-22 10:14:13,853 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-22 10:14:13,853 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-22 10:14:13,853 INFO L858 garLoopResultBuilder]: For program point L119(lines 119 120) no Hoare annotation was computed. [2021-12-22 10:14:13,853 INFO L858 garLoopResultBuilder]: For program point L119-2(lines 119 120) no Hoare annotation was computed. [2021-12-22 10:14:13,853 INFO L854 garLoopResultBuilder]: At program point L128(lines 21 129) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= |ULTIMATE.start___ieee754_sqrt_#res#1| .cse0) (= |ULTIMATE.start___ieee754_sqrt_~x#1| .cse0))) [2021-12-22 10:14:13,853 INFO L858 garLoopResultBuilder]: For program point L87(lines 87 96) no Hoare annotation was computed. [2021-12-22 10:14:13,853 INFO L858 garLoopResultBuilder]: For program point L87-2(lines 87 96) no Hoare annotation was computed. [2021-12-22 10:14:13,853 INFO L858 garLoopResultBuilder]: For program point L46(lines 46 57) no Hoare annotation was computed. [2021-12-22 10:14:13,853 INFO L858 garLoopResultBuilder]: For program point L46-2(lines 46 57) no Hoare annotation was computed. [2021-12-22 10:14:13,854 INFO L858 garLoopResultBuilder]: For program point L104(lines 104 115) no Hoare annotation was computed. [2021-12-22 10:14:13,854 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 43) no Hoare annotation was computed. [2021-12-22 10:14:13,854 INFO L854 garLoopResultBuilder]: At program point L71-2(lines 71 81) the Hoare annotation is: false [2021-12-22 10:14:13,854 INFO L858 garLoopResultBuilder]: For program point L38-2(lines 38 43) no Hoare annotation was computed. [2021-12-22 10:14:13,854 INFO L858 garLoopResultBuilder]: For program point L71-3(lines 71 81) no Hoare annotation was computed. [2021-12-22 10:14:13,854 INFO L854 garLoopResultBuilder]: At program point L47-2(lines 47 51) the Hoare annotation is: false [2021-12-22 10:14:13,854 INFO L858 garLoopResultBuilder]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2021-12-22 10:14:13,854 INFO L858 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2021-12-22 10:14:13,854 INFO L858 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-12-22 10:14:13,854 INFO L858 garLoopResultBuilder]: For program point L89(lines 89 90) no Hoare annotation was computed. [2021-12-22 10:14:13,854 INFO L858 garLoopResultBuilder]: For program point L122-1(lines 122 127) no Hoare annotation was computed. [2021-12-22 10:14:13,854 INFO L858 garLoopResultBuilder]: For program point L155-2(lines 155 158) no Hoare annotation was computed. [2021-12-22 10:14:13,854 INFO L854 garLoopResultBuilder]: At program point L122-2(lines 122 127) the Hoare annotation is: false [2021-12-22 10:14:13,854 INFO L858 garLoopResultBuilder]: For program point L89-2(lines 89 90) no Hoare annotation was computed. [2021-12-22 10:14:13,854 INFO L858 garLoopResultBuilder]: For program point L122-3(lines 122 127) no Hoare annotation was computed. [2021-12-22 10:14:13,854 INFO L858 garLoopResultBuilder]: For program point L106(lines 106 114) no Hoare annotation was computed. [2021-12-22 10:14:13,854 INFO L858 garLoopResultBuilder]: For program point L73(lines 73 77) no Hoare annotation was computed. [2021-12-22 10:14:13,855 INFO L858 garLoopResultBuilder]: For program point L73-2(lines 73 77) no Hoare annotation was computed. [2021-12-22 10:14:13,855 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-22 10:14:13,855 INFO L858 garLoopResultBuilder]: For program point L156(line 156) no Hoare annotation was computed. [2021-12-22 10:14:13,855 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 156) no Hoare annotation was computed. [2021-12-22 10:14:13,855 INFO L854 garLoopResultBuilder]: At program point L140(lines 131 141) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short11#1| (= |ULTIMATE.start___ieee754_sqrt_~x#1| (fp.neg (_ +zero 11 53))) (= (_ bv1 32) |ULTIMATE.start___signbit_double_#res#1|)) [2021-12-22 10:14:13,855 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 42) no Hoare annotation was computed. [2021-12-22 10:14:13,855 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-22 10:14:13,855 INFO L858 garLoopResultBuilder]: For program point L92(lines 92 93) no Hoare annotation was computed. [2021-12-22 10:14:13,855 INFO L858 garLoopResultBuilder]: For program point L92-2(lines 92 93) no Hoare annotation was computed. [2021-12-22 10:14:13,855 INFO L854 garLoopResultBuilder]: At program point L84-2(lines 84 100) the Hoare annotation is: false [2021-12-22 10:14:13,855 INFO L858 garLoopResultBuilder]: For program point L84-3(lines 21 129) no Hoare annotation was computed. [2021-12-22 10:14:13,855 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 114) no Hoare annotation was computed. [2021-12-22 10:14:13,855 INFO L858 garLoopResultBuilder]: For program point L134-1(lines 134 138) no Hoare annotation was computed. [2021-12-22 10:14:13,855 INFO L854 garLoopResultBuilder]: At program point L134-2(lines 134 138) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= |ULTIMATE.start___ieee754_sqrt_#res#1| .cse0) |ULTIMATE.start_main_#t~short11#1| (= .cse0 |ULTIMATE.start___signbit_double_~x#1|) (= |ULTIMATE.start___ieee754_sqrt_~x#1| .cse0) (= |ULTIMATE.start_main_~res~0#1| .cse0))) [2021-12-22 10:14:13,855 INFO L858 garLoopResultBuilder]: For program point L134-3(lines 134 138) no Hoare annotation was computed. [2021-12-22 10:14:13,858 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-22 10:14:13,859 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 10:14:13,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:14:13 BoogieIcfgContainer [2021-12-22 10:14:13,876 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 10:14:13,877 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 10:14:13,877 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 10:14:13,877 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 10:14:13,878 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:14:03" (3/4) ... [2021-12-22 10:14:13,880 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 10:14:13,890 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-12-22 10:14:13,891 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-12-22 10:14:13,891 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 10:14:13,892 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 10:14:13,912 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) [2021-12-22 10:14:13,915 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && aux-res == -0.0 && __signbit_double(res) == 1-aux) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && res == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) [2021-12-22 10:14:13,916 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (aux-res == -0.0 && __signbit_double(res) == 1-aux && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && 1bv32 == \result [2021-12-22 10:14:13,943 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 10:14:13,943 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 10:14:13,944 INFO L158 Benchmark]: Toolchain (without parser) took 13334.90ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 45.4MB in the beginning and 30.2MB in the end (delta: 15.2MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2021-12-22 10:14:13,944 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory was 46.6MB in the beginning and 46.5MB in the end (delta: 43.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:14:13,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.15ms. Allocated memory is still 65.0MB. Free memory was 45.3MB in the beginning and 32.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-22 10:14:13,944 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.81ms. Allocated memory is still 65.0MB. Free memory was 32.2MB in the beginning and 47.5MB in the end (delta: -15.2MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-12-22 10:14:13,945 INFO L158 Benchmark]: Boogie Preprocessor took 50.10ms. Allocated memory is still 65.0MB. Free memory was 47.5MB in the beginning and 45.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 10:14:13,945 INFO L158 Benchmark]: RCFGBuilder took 2281.15ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 29.5MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-22 10:14:13,945 INFO L158 Benchmark]: TraceAbstraction took 10598.94ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 28.9MB in the beginning and 35.0MB in the end (delta: -6.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2021-12-22 10:14:13,946 INFO L158 Benchmark]: Witness Printer took 66.32ms. Allocated memory is still 79.7MB. Free memory was 35.0MB in the beginning and 30.2MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 10:14:13,947 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 65.0MB. Free memory was 46.6MB in the beginning and 46.5MB in the end (delta: 43.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.15ms. Allocated memory is still 65.0MB. Free memory was 45.3MB in the beginning and 32.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.81ms. Allocated memory is still 65.0MB. Free memory was 32.2MB in the beginning and 47.5MB in the end (delta: -15.2MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.10ms. Allocated memory is still 65.0MB. Free memory was 47.5MB in the beginning and 45.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2281.15ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 29.5MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10598.94ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 28.9MB in the beginning and 35.0MB in the end (delta: -6.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Witness Printer took 66.32ms. Allocated memory is still 79.7MB. Free memory was 35.0MB in the beginning and 30.2MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 156]: 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, 53 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 989 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 73 IncrementalHoareTripleChecker+Unchecked, 660 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69 IncrementalHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 329 mSDtfsCounter, 69 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 50 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 29 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 74 ConstructedInterpolants, 11 QuantifiedInterpolants, 328 SizeOfPredicates, 33 NumberOfNonLiveVariables, 308 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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: 71]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: (((\result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && aux-res == -0.0 && __signbit_double(res) == 1-aux) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && res == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: (aux-res == -0.0 && __signbit_double(res) == 1-aux && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && 1bv32 == \result - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: sign == 2147483648bv32 && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) RESULT: Ultimate proved your program to be correct! [2021-12-22 10:14:14,072 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