./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/square_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/square_8.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80c3dca82feaee551f8126572f1dcc09ca65938303a72a158f2c77643864b20a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:05:05,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:05:05,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:05:05,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:05:05,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:05:05,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:05:05,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:05:05,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:05:05,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:05:05,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:05:05,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:05:05,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:05:05,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:05:05,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:05:05,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:05:05,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:05:05,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:05:05,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:05:05,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:05:05,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:05:05,296 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:05:05,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:05:05,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:05:05,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:05:05,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:05:05,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:05:05,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:05:05,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:05:05,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:05:05,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:05:05,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:05:05,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:05:05,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:05:05,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:05:05,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:05:05,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:05:05,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:05:05,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:05:05,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:05:05,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:05:05,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:05:05,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:05:05,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 01:05:05,324 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:05:05,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:05:05,325 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:05:05,325 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:05:05,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:05:05,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:05:05,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:05:05,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:05:05,326 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:05:05,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:05:05,326 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:05:05,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 01:05:05,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:05:05,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:05:05,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:05:05,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:05:05,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:05:05,328 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:05:05,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:05:05,328 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:05:05,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:05:05,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:05:05,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:05:05,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:05:05,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:05:05,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:05:05,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:05:05,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:05:05,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 01:05:05,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 01:05:05,330 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:05:05,330 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:05:05,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:05:05,330 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80c3dca82feaee551f8126572f1dcc09ca65938303a72a158f2c77643864b20a [2022-07-21 01:05:05,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:05:05,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:05:05,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:05:05,581 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:05:05,581 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:05:05,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_8.i [2022-07-21 01:05:05,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3846bade5/f40b20dd12e4449aa24c236f4ab52858/FLAG4eaa8dfac [2022-07-21 01:05:06,022 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:05:06,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_8.i [2022-07-21 01:05:06,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3846bade5/f40b20dd12e4449aa24c236f4ab52858/FLAG4eaa8dfac [2022-07-21 01:05:06,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3846bade5/f40b20dd12e4449aa24c236f4ab52858 [2022-07-21 01:05:06,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:05:06,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:05:06,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:05:06,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:05:06,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:05:06,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:05:06" (1/1) ... [2022-07-21 01:05:06,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67640860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:06, skipping insertion in model container [2022-07-21 01:05:06,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:05:06" (1/1) ... [2022-07-21 01:05:06,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:05:06,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:05:06,561 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_8.i[1625,1638] [2022-07-21 01:05:06,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:05:06,569 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:05:06,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_8.i[1625,1638] [2022-07-21 01:05:06,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:05:06,589 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:05:06,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:06 WrapperNode [2022-07-21 01:05:06,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:05:06,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:05:06,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:05:06,591 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:05:06,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:06" (1/1) ... [2022-07-21 01:05:06,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:06" (1/1) ... [2022-07-21 01:05:06,616 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2022-07-21 01:05:06,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:05:06,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:05:06,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:05:06,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:05:06,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:06" (1/1) ... [2022-07-21 01:05:06,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:06" (1/1) ... [2022-07-21 01:05:06,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:06" (1/1) ... [2022-07-21 01:05:06,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:06" (1/1) ... [2022-07-21 01:05:06,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:06" (1/1) ... [2022-07-21 01:05:06,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:06" (1/1) ... [2022-07-21 01:05:06,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:06" (1/1) ... [2022-07-21 01:05:06,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:05:06,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:05:06,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:05:06,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:05:06,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:06" (1/1) ... [2022-07-21 01:05:06,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:05:06,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:05:06,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 01:05:06,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 01:05:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:05:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 01:05:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:05:06,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:05:06,732 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:05:06,733 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:05:06,794 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:05:06,798 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:05:06,798 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 01:05:06,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:05:06 BoogieIcfgContainer [2022-07-21 01:05:06,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:05:06,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:05:06,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:05:06,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:05:06,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:05:06" (1/3) ... [2022-07-21 01:05:06,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f6c61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:05:06, skipping insertion in model container [2022-07-21 01:05:06,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:06" (2/3) ... [2022-07-21 01:05:06,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f6c61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:05:06, skipping insertion in model container [2022-07-21 01:05:06,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:05:06" (3/3) ... [2022-07-21 01:05:06,804 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8.i [2022-07-21 01:05:06,814 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:05:06,814 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:05:06,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:05:06,847 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@63fe7928, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5443a4fe [2022-07-21 01:05:06,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:05:06,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) [2022-07-21 01:05:06,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 01:05:06,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:05:06,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 01:05:06,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:05:06,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:05:06,857 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2022-07-21 01:05:06,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:05:06,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052952461] [2022-07-21 01:05:06,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:05:06,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:05:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:05:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:05:06,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:05:06,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052952461] [2022-07-21 01:05:06,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052952461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:05:06,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:05:06,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:05:06,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032851756] [2022-07-21 01:05:06,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:05:06,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:05:06,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:05:06,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:05:06,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:05:06,980 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:05:06,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:05:06,988 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-07-21 01:05:06,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:05:06,990 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-07-21 01:05:06,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:05:06,995 INFO L225 Difference]: With dead ends: 19 [2022-07-21 01:05:06,995 INFO L226 Difference]: Without dead ends: 7 [2022-07-21 01:05:06,998 INFO L412 NwaCegarLoop]: 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 [2022-07-21 01:05:07,001 INFO L413 NwaCegarLoop]: 10 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, 10 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 [2022-07-21 01:05:07,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:05:07,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-07-21 01:05:07,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-07-21 01:05:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:05:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-07-21 01:05:07,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-07-21 01:05:07,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:05:07,022 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-07-21 01:05:07,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:05:07,023 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-07-21 01:05:07,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 01:05:07,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:05:07,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 01:05:07,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 01:05:07,024 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:05:07,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:05:07,024 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2022-07-21 01:05:07,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:05:07,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275018107] [2022-07-21 01:05:07,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:05:07,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:05:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:05:07,071 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 01:05:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:05:07,105 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 01:05:07,106 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 01:05:07,107 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:05:07,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 01:05:07,116 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 01:05:07,119 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:05:07,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:05:07 BoogieIcfgContainer [2022-07-21 01:05:07,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:05:07,141 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:05:07,141 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:05:07,141 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:05:07,142 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:05:06" (3/4) ... [2022-07-21 01:05:07,145 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 01:05:07,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:05:07,146 INFO L158 Benchmark]: Toolchain (without parser) took 704.28ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 51.0MB in the beginning and 59.4MB in the end (delta: -8.4MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2022-07-21 01:05:07,147 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 67.1MB. Free memory was 50.5MB in the beginning and 50.5MB in the end (delta: 54.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:05:07,149 INFO L158 Benchmark]: CACSL2BoogieTranslator took 147.21ms. Allocated memory is still 67.1MB. Free memory was 50.8MB in the beginning and 41.1MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 01:05:07,150 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.99ms. Allocated memory is still 67.1MB. Free memory was 41.1MB in the beginning and 51.3MB in the end (delta: -10.2MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2022-07-21 01:05:07,152 INFO L158 Benchmark]: Boogie Preprocessor took 20.59ms. Allocated memory is still 67.1MB. Free memory was 51.3MB in the beginning and 50.3MB in the end (delta: 982.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:05:07,152 INFO L158 Benchmark]: RCFGBuilder took 161.36ms. Allocated memory is still 67.1MB. Free memory was 50.3MB in the beginning and 42.0MB in the end (delta: 8.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-21 01:05:07,152 INFO L158 Benchmark]: TraceAbstraction took 339.50ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 41.5MB in the beginning and 59.9MB in the end (delta: -18.4MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2022-07-21 01:05:07,153 INFO L158 Benchmark]: Witness Printer took 4.84ms. Allocated memory is still 88.1MB. Free memory was 59.9MB in the beginning and 59.4MB in the end (delta: 515.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:05:07,157 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 67.1MB. Free memory was 50.5MB in the beginning and 50.5MB in the end (delta: 54.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 147.21ms. Allocated memory is still 67.1MB. Free memory was 50.8MB in the beginning and 41.1MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.99ms. Allocated memory is still 67.1MB. Free memory was 41.1MB in the beginning and 51.3MB in the end (delta: -10.2MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.59ms. Allocated memory is still 67.1MB. Free memory was 51.3MB in the beginning and 50.3MB in the end (delta: 982.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 161.36ms. Allocated memory is still 67.1MB. Free memory was 50.3MB in the beginning and 42.0MB in the end (delta: 8.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 339.50ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 41.5MB in the beginning and 59.9MB in the end (delta: -18.4MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * Witness Printer took 4.84ms. Allocated memory is still 88.1MB. Free memory was 59.9MB in the beginning and 59.4MB in the end (delta: 515.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 38]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 37, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L32] float x = IN; [L34-L35] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L37] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=49, x=49] [L38] reach_error() VAL [IN=49, x=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 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, 10 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=11occurred 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, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 [2022-07-21 01:05:07,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/square_8.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80c3dca82feaee551f8126572f1dcc09ca65938303a72a158f2c77643864b20a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:05:08,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:05:08,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:05:08,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:05:08,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:05:08,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:05:08,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:05:08,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:05:08,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:05:08,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:05:08,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:05:08,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:05:08,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:05:08,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:05:08,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:05:08,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:05:08,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:05:08,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:05:08,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:05:08,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:05:08,984 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:05:08,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:05:08,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:05:08,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:05:08,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:05:09,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:05:09,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:05:09,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:05:09,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:05:09,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:05:09,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:05:09,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:05:09,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:05:09,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:05:09,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:05:09,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:05:09,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:05:09,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:05:09,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:05:09,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:05:09,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:05:09,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:05:09,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 01:05:09,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:05:09,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:05:09,041 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:05:09,041 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:05:09,042 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:05:09,042 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:05:09,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:05:09,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:05:09,043 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:05:09,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:05:09,044 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:05:09,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:05:09,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:05:09,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:05:09,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:05:09,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:05:09,045 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 01:05:09,045 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 01:05:09,045 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 01:05:09,045 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:05:09,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:05:09,046 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:05:09,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:05:09,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:05:09,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:05:09,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:05:09,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:05:09,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:05:09,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:05:09,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:05:09,047 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 01:05:09,047 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 01:05:09,048 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:05:09,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:05:09,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:05:09,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 01:05:09,048 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80c3dca82feaee551f8126572f1dcc09ca65938303a72a158f2c77643864b20a [2022-07-21 01:05:09,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:05:09,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:05:09,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:05:09,336 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:05:09,336 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:05:09,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_8.i [2022-07-21 01:05:09,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/752c6ac87/0018d84f30884a44a942479db0254e72/FLAGbe11b92e2 [2022-07-21 01:05:09,767 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:05:09,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_8.i [2022-07-21 01:05:09,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/752c6ac87/0018d84f30884a44a942479db0254e72/FLAGbe11b92e2 [2022-07-21 01:05:09,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/752c6ac87/0018d84f30884a44a942479db0254e72 [2022-07-21 01:05:09,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:05:09,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:05:09,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:05:09,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:05:09,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:05:09,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:05:09" (1/1) ... [2022-07-21 01:05:09,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b2bf17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:09, skipping insertion in model container [2022-07-21 01:05:09,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:05:09" (1/1) ... [2022-07-21 01:05:09,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:05:09,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:05:09,940 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_8.i[1625,1638] [2022-07-21 01:05:09,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:05:09,983 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:05:09,998 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_8.i[1625,1638] [2022-07-21 01:05:09,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:05:10,014 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:05:10,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:10 WrapperNode [2022-07-21 01:05:10,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:05:10,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:05:10,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:05:10,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:05:10,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:10" (1/1) ... [2022-07-21 01:05:10,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:10" (1/1) ... [2022-07-21 01:05:10,043 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2022-07-21 01:05:10,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:05:10,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:05:10,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:05:10,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:05:10,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:10" (1/1) ... [2022-07-21 01:05:10,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:10" (1/1) ... [2022-07-21 01:05:10,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:10" (1/1) ... [2022-07-21 01:05:10,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:10" (1/1) ... [2022-07-21 01:05:10,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:10" (1/1) ... [2022-07-21 01:05:10,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:10" (1/1) ... [2022-07-21 01:05:10,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:10" (1/1) ... [2022-07-21 01:05:10,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:05:10,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:05:10,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:05:10,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:05:10,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:10" (1/1) ... [2022-07-21 01:05:10,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:05:10,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:05:10,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 01:05:10,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 01:05:10,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:05:10,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 01:05:10,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:05:10,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:05:10,215 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:05:10,216 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:05:12,375 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:05:12,378 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:05:12,379 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 01:05:12,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:05:12 BoogieIcfgContainer [2022-07-21 01:05:12,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:05:12,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:05:12,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:05:12,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:05:12,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:05:09" (1/3) ... [2022-07-21 01:05:12,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d624e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:05:12, skipping insertion in model container [2022-07-21 01:05:12,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:05:10" (2/3) ... [2022-07-21 01:05:12,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d624e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:05:12, skipping insertion in model container [2022-07-21 01:05:12,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:05:12" (3/3) ... [2022-07-21 01:05:12,393 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8.i [2022-07-21 01:05:12,402 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:05:12,402 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:05:12,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:05:12,435 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@32dda7ea, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@417fce31 [2022-07-21 01:05:12,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:05:12,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) [2022-07-21 01:05:12,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 01:05:12,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:05:12,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 01:05:12,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:05:12,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:05:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2022-07-21 01:05:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:05:12,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875805261] [2022-07-21 01:05:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:05:12,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:05:12,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:05:12,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:05:12,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 01:05:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:05:12,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 01:05:12,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:05:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:05:12,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:05:12,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:05:12,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875805261] [2022-07-21 01:05:12,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875805261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:05:12,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:05:12,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:05:12,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295203260] [2022-07-21 01:05:12,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:05:12,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:05:12,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:05:12,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:05:12,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:05:12,906 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:05:12,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:05:12,914 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-07-21 01:05:12,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:05:12,915 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-07-21 01:05:12,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:05:12,919 INFO L225 Difference]: With dead ends: 19 [2022-07-21 01:05:12,920 INFO L226 Difference]: Without dead ends: 7 [2022-07-21 01:05:12,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:05:12,923 INFO L413 NwaCegarLoop]: 10 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, 10 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 [2022-07-21 01:05:12,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:05:12,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-07-21 01:05:12,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-07-21 01:05:12,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:05:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-07-21 01:05:12,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-07-21 01:05:12,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:05:12,942 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-07-21 01:05:12,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:05:12,942 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-07-21 01:05:12,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 01:05:12,942 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:05:12,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 01:05:12,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 01:05:13,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:05:13,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:05:13,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:05:13,160 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2022-07-21 01:05:13,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:05:13,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763176318] [2022-07-21 01:05:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:05:13,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:05:13,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:05:13,162 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) [2022-07-21 01:05:13,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 01:08:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:08:11,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 01:08:11,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:08:26,640 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_main_~IN~0#1| (_ +zero 8 24)) (= |c_ULTIMATE.start_main_~result~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|))) (fp.lt |ULTIMATE.start_main_~IN~0#1| .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-21 01:09:14,156 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)))) (or (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq |ULTIMATE.start_main_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main_~IN~0#1| .cse1)))) is different from false [2022-07-21 01:09:16,209 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|) |ULTIMATE.start_main_~IN~0#1|)))) (or (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq |ULTIMATE.start_main_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main_~IN~0#1| .cse1)))) is different from true [2022-07-21 01:09:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:09:16,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:09:16,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:09:16,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763176318] [2022-07-21 01:09:16,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763176318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:09:16,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:09:16,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 01:09:16,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115747058] [2022-07-21 01:09:16,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:09:16,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 01:09:16,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:09:16,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 01:09:16,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2022-07-21 01:09:16,212 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:09:18,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:09:18,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:09:18,590 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2022-07-21 01:09:18,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 01:09:18,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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 6 [2022-07-21 01:09:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:09:18,666 INFO L225 Difference]: With dead ends: 7 [2022-07-21 01:09:18,666 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 01:09:18,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=18, Invalid=17, Unknown=3, NotChecked=18, Total=56 [2022-07-21 01:09:18,668 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 01:09:18,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 7 Unchecked, 2.2s Time] [2022-07-21 01:09:18,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 01:09:18,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 01:09:18,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:09:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 01:09:18,669 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2022-07-21 01:09:18,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:09:18,669 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 01:09:18,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:09:18,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 01:09:18,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 01:09:18,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:09:18,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 01:09:18,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:09:18,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 01:09:18,895 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 01:09:18,902 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 01:09:18,903 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 01:09:18,903 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 01:09:18,903 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2022-07-21 01:09:18,903 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 38) no Hoare annotation was computed. [2022-07-21 01:09:18,903 INFO L899 garLoopResultBuilder]: For program point L23(lines 23 25) no Hoare annotation was computed. [2022-07-21 01:09:18,903 INFO L902 garLoopResultBuilder]: At program point L40(lines 27 41) the Hoare annotation is: true [2022-07-21 01:09:18,903 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2022-07-21 01:09:18,903 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 38) no Hoare annotation was computed. [2022-07-21 01:09:18,903 INFO L899 garLoopResultBuilder]: For program point L37-2(lines 37 38) no Hoare annotation was computed. [2022-07-21 01:09:18,906 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 01:09:18,907 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:09:18,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:09:18 BoogieIcfgContainer [2022-07-21 01:09:18,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:09:18,914 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:09:18,914 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:09:18,914 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:09:18,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:05:12" (3/4) ... [2022-07-21 01:09:18,916 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 01:09:18,922 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-21 01:09:18,923 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 01:09:18,923 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 01:09:18,923 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 01:09:18,941 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 01:09:18,942 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:09:18,942 INFO L158 Benchmark]: Toolchain (without parser) took 249154.61ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 41.0MB in the beginning and 58.8MB in the end (delta: -17.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:09:18,943 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 46.1MB. Free memory was 27.7MB in the beginning and 27.6MB in the end (delta: 61.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:09:18,943 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.55ms. Allocated memory is still 67.1MB. Free memory was 40.8MB in the beginning and 50.3MB in the end (delta: -9.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-21 01:09:18,943 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.44ms. Allocated memory is still 67.1MB. Free memory was 50.0MB in the beginning and 48.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:09:18,944 INFO L158 Benchmark]: Boogie Preprocessor took 39.58ms. Allocated memory is still 67.1MB. Free memory was 48.7MB in the beginning and 47.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:09:18,944 INFO L158 Benchmark]: RCFGBuilder took 2295.61ms. Allocated memory is still 67.1MB. Free memory was 47.5MB in the beginning and 39.3MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 01:09:18,944 INFO L158 Benchmark]: TraceAbstraction took 246532.41ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 38.9MB in the beginning and 61.2MB in the end (delta: -22.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:09:18,945 INFO L158 Benchmark]: Witness Printer took 28.26ms. Allocated memory is still 81.8MB. Free memory was 61.2MB in the beginning and 58.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:09:18,946 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 46.1MB. Free memory was 27.7MB in the beginning and 27.6MB in the end (delta: 61.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.55ms. Allocated memory is still 67.1MB. Free memory was 40.8MB in the beginning and 50.3MB in the end (delta: -9.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.44ms. Allocated memory is still 67.1MB. Free memory was 50.0MB in the beginning and 48.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.58ms. Allocated memory is still 67.1MB. Free memory was 48.7MB in the beginning and 47.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2295.61ms. Allocated memory is still 67.1MB. Free memory was 47.5MB in the beginning and 39.3MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 246532.41ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 38.9MB in the beginning and 61.2MB in the end (delta: -22.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 28.26ms. Allocated memory is still 81.8MB. Free memory was 61.2MB in the beginning and 58.8MB in the end (delta: 2.4MB). 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 - PositiveResult [Line: 38]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 246.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 7 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 11 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 178.6s SatisfiabilityAnalysisTime, 64.8s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 2 QuantifiedInterpolants, 246 SizeOfPredicates, 6 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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: 27]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-21 01:09:19,075 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