./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 c3fed411 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-tmp.no-commuhash-c3fed41 [2021-12-17 06:09:40,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 06:09:40,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 06:09:40,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 06:09:40,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 06:09:40,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 06:09:40,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 06:09:40,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 06:09:40,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 06:09:40,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 06:09:40,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 06:09:40,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 06:09:40,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 06:09:40,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 06:09:40,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 06:09:40,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 06:09:40,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 06:09:40,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 06:09:40,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 06:09:40,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 06:09:40,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 06:09:40,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 06:09:40,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 06:09:40,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 06:09:40,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 06:09:40,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 06:09:40,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 06:09:40,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 06:09:40,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 06:09:40,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 06:09:40,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 06:09:40,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 06:09:40,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 06:09:40,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 06:09:40,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 06:09:40,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 06:09:40,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 06:09:40,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 06:09:40,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 06:09:40,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 06:09:40,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 06:09:40,761 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 06:09:40,797 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 06:09:40,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 06:09:40,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 06:09:40,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 06:09:40,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 06:09:40,799 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 06:09:40,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 06:09:40,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 06:09:40,800 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 06:09:40,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 06:09:40,801 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 06:09:40,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 06:09:40,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 06:09:40,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 06:09:40,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 06:09:40,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 06:09:40,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 06:09:40,802 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 06:09:40,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 06:09:40,802 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 06:09:40,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 06:09:40,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 06:09:40,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 06:09:40,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 06:09:40,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:09:40,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 06:09:40,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 06:09:40,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 06:09:40,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 06:09:40,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 06:09:40,805 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 06:09:40,805 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 06:09:40,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 06:09:40,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 06:09:40,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80c3dca82feaee551f8126572f1dcc09ca65938303a72a158f2c77643864b20a [2021-12-17 06:09:41,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 06:09:41,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 06:09:41,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 06:09:41,029 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 06:09:41,030 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 06:09:41,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_8.i [2021-12-17 06:09:41,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69423684d/7d88b9f77c2042d49c778f83215471d1/FLAGa10c53d98 [2021-12-17 06:09:41,454 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 06:09:41,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_8.i [2021-12-17 06:09:41,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69423684d/7d88b9f77c2042d49c778f83215471d1/FLAGa10c53d98 [2021-12-17 06:09:41,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69423684d/7d88b9f77c2042d49c778f83215471d1 [2021-12-17 06:09:41,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 06:09:41,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 06:09:41,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 06:09:41,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 06:09:41,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 06:09:41,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:09:41" (1/1) ... [2021-12-17 06:09:41,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50cb191d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:41, skipping insertion in model container [2021-12-17 06:09:41,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:09:41" (1/1) ... [2021-12-17 06:09:41,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 06:09:41,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 06:09:41,674 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] [2021-12-17 06:09:41,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:09:41,684 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 06:09:41,699 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] [2021-12-17 06:09:41,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:09:41,712 INFO L208 MainTranslator]: Completed translation [2021-12-17 06:09:41,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:41 WrapperNode [2021-12-17 06:09:41,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 06:09:41,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 06:09:41,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 06:09:41,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 06:09:41,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:41" (1/1) ... [2021-12-17 06:09:41,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:41" (1/1) ... [2021-12-17 06:09:41,738 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2021-12-17 06:09:41,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 06:09:41,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 06:09:41,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 06:09:41,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 06:09:41,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:41" (1/1) ... [2021-12-17 06:09:41,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:41" (1/1) ... [2021-12-17 06:09:41,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:41" (1/1) ... [2021-12-17 06:09:41,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:41" (1/1) ... [2021-12-17 06:09:41,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:41" (1/1) ... [2021-12-17 06:09:41,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:41" (1/1) ... [2021-12-17 06:09:41,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:41" (1/1) ... [2021-12-17 06:09:41,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 06:09:41,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 06:09:41,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 06:09:41,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 06:09:41,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:41" (1/1) ... [2021-12-17 06:09:41,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:09:41,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 06:09:41,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 06:09:41,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 06:09:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 06:09:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 06:09:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 06:09:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 06:09:41,934 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 06:09:41,935 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 06:09:42,005 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 06:09:42,008 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 06:09:42,009 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 06:09:42,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:09:42 BoogieIcfgContainer [2021-12-17 06:09:42,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 06:09:42,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 06:09:42,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 06:09:42,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 06:09:42,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:09:41" (1/3) ... [2021-12-17 06:09:42,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e264477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:09:42, skipping insertion in model container [2021-12-17 06:09:42,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:41" (2/3) ... [2021-12-17 06:09:42,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e264477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:09:42, skipping insertion in model container [2021-12-17 06:09:42,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:09:42" (3/3) ... [2021-12-17 06:09:42,016 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8.i [2021-12-17 06:09:42,019 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 06:09:42,019 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 06:09:42,082 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 06:09:42,104 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 06:09:42,104 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 06:09:42,114 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) [2021-12-17 06:09:42,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-17 06:09:42,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 06:09:42,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-17 06:09:42,133 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 06:09:42,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 06:09:42,136 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-12-17 06:09:42,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 06:09:42,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906293519] [2021-12-17 06:09:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 06:09:42,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 06:09:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 06:09:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 06:09:42,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 06:09:42,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906293519] [2021-12-17 06:09:42,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906293519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 06:09:42,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 06:09:42,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 06:09:42,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387701588] [2021-12-17 06:09:42,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 06:09:42,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 06:09:42,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 06:09:42,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 06:09:42,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 06:09:42,310 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) [2021-12-17 06:09:42,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 06:09:42,318 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-12-17 06:09:42,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 06:09:42,320 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 [2021-12-17 06:09:42,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 06:09:42,325 INFO L225 Difference]: With dead ends: 19 [2021-12-17 06:09:42,325 INFO L226 Difference]: Without dead ends: 7 [2021-12-17 06:09:42,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 06:09:42,331 INFO L933 BasicCegarLoop]: 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 [2021-12-17 06:09:42,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 06:09:42,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-12-17 06:09:42,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-12-17 06:09:42,352 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) [2021-12-17 06:09:42,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-12-17 06:09:42,353 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-12-17 06:09:42,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 06:09:42,354 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-12-17 06:09:42,354 INFO L471 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) [2021-12-17 06:09:42,354 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-12-17 06:09:42,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-17 06:09:42,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 06:09:42,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-17 06:09:42,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 06:09:42,356 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 06:09:42,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 06:09:42,359 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-12-17 06:09:42,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 06:09:42,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919771913] [2021-12-17 06:09:42,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 06:09:42,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 06:09:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 06:09:42,387 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 06:09:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 06:09:42,420 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 06:09:42,421 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 06:09:42,422 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 06:09:42,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 06:09:42,429 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-17 06:09:42,432 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 06:09:42,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 06:09:42 BoogieIcfgContainer [2021-12-17 06:09:42,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 06:09:42,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 06:09:42,460 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 06:09:42,460 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 06:09:42,460 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:09:42" (3/4) ... [2021-12-17 06:09:42,462 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-17 06:09:42,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 06:09:42,464 INFO L158 Benchmark]: Toolchain (without parser) took 981.91ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 72.1MB in the beginning and 68.4MB in the end (delta: 3.7MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2021-12-17 06:09:42,464 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory was 58.1MB in the beginning and 58.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:09:42,466 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.84ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 72.1MB in the beginning and 102.0MB in the end (delta: -29.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 06:09:42,467 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.55ms. Allocated memory is still 125.8MB. Free memory was 102.0MB in the beginning and 100.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 06:09:42,469 INFO L158 Benchmark]: Boogie Preprocessor took 19.37ms. Allocated memory is still 125.8MB. Free memory was 100.4MB in the beginning and 99.7MB in the end (delta: 671.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:09:42,469 INFO L158 Benchmark]: RCFGBuilder took 250.50ms. Allocated memory is still 125.8MB. Free memory was 99.7MB in the beginning and 90.7MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 06:09:42,470 INFO L158 Benchmark]: TraceAbstraction took 447.39ms. Allocated memory is still 125.8MB. Free memory was 90.0MB in the beginning and 68.4MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-17 06:09:42,470 INFO L158 Benchmark]: Witness Printer took 3.68ms. Allocated memory is still 125.8MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:09:42,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory was 58.1MB in the beginning and 58.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.84ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 72.1MB in the beginning and 102.0MB in the end (delta: -29.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.55ms. Allocated memory is still 125.8MB. Free memory was 102.0MB in the beginning and 100.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.37ms. Allocated memory is still 125.8MB. Free memory was 100.4MB in the beginning and 99.7MB in the end (delta: 671.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 250.50ms. Allocated memory is still 125.8MB. Free memory was 99.7MB in the beginning and 90.7MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 447.39ms. Allocated memory is still 125.8MB. Free memory was 90.0MB in the beginning and 68.4MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 3.68ms. Allocated memory is still 125.8MB. Free memory is still 68.4MB. 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, PartialOrderReductionTime: 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 [2021-12-17 06:09:42,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-tmp.no-commuhash-c3fed41 [2021-12-17 06:09:44,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 06:09:44,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 06:09:44,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 06:09:44,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 06:09:44,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 06:09:44,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 06:09:44,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 06:09:44,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 06:09:44,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 06:09:44,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 06:09:44,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 06:09:44,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 06:09:44,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 06:09:44,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 06:09:44,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 06:09:44,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 06:09:44,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 06:09:44,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 06:09:44,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 06:09:44,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 06:09:44,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 06:09:44,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 06:09:44,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 06:09:44,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 06:09:44,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 06:09:44,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 06:09:44,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 06:09:44,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 06:09:44,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 06:09:44,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 06:09:44,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 06:09:44,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 06:09:44,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 06:09:44,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 06:09:44,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 06:09:44,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 06:09:44,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 06:09:44,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 06:09:44,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 06:09:44,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 06:09:44,680 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-17 06:09:44,702 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 06:09:44,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 06:09:44,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 06:09:44,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 06:09:44,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 06:09:44,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 06:09:44,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 06:09:44,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 06:09:44,706 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 06:09:44,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 06:09:44,707 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 06:09:44,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 06:09:44,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 06:09:44,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 06:09:44,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 06:09:44,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 06:09:44,708 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-17 06:09:44,708 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-17 06:09:44,708 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-17 06:09:44,709 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 06:09:44,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 06:09:44,709 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 06:09:44,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 06:09:44,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 06:09:44,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 06:09:44,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 06:09:44,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:09:44,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 06:09:44,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 06:09:44,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 06:09:44,715 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-17 06:09:44,715 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-17 06:09:44,716 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 06:09:44,716 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 06:09:44,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 06:09:44,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 06:09:44,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-17 06:09:44,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80c3dca82feaee551f8126572f1dcc09ca65938303a72a158f2c77643864b20a [2021-12-17 06:09:44,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 06:09:45,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 06:09:45,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 06:09:45,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 06:09:45,019 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 06:09:45,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_8.i [2021-12-17 06:09:45,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8321f5904/21d5c288bd5c434d9105bcd987319dfc/FLAG55d375f56 [2021-12-17 06:09:45,455 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 06:09:45,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_8.i [2021-12-17 06:09:45,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8321f5904/21d5c288bd5c434d9105bcd987319dfc/FLAG55d375f56 [2021-12-17 06:09:45,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8321f5904/21d5c288bd5c434d9105bcd987319dfc [2021-12-17 06:09:45,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 06:09:45,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 06:09:45,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 06:09:45,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 06:09:45,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 06:09:45,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:09:45" (1/1) ... [2021-12-17 06:09:45,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6cc863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:45, skipping insertion in model container [2021-12-17 06:09:45,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:09:45" (1/1) ... [2021-12-17 06:09:45,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 06:09:45,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 06:09:45,992 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] [2021-12-17 06:09:45,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:09:46,008 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 06:09:46,049 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] [2021-12-17 06:09:46,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:09:46,062 INFO L208 MainTranslator]: Completed translation [2021-12-17 06:09:46,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:46 WrapperNode [2021-12-17 06:09:46,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 06:09:46,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 06:09:46,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 06:09:46,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 06:09:46,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:46" (1/1) ... [2021-12-17 06:09:46,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:46" (1/1) ... [2021-12-17 06:09:46,119 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2021-12-17 06:09:46,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 06:09:46,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 06:09:46,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 06:09:46,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 06:09:46,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:46" (1/1) ... [2021-12-17 06:09:46,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:46" (1/1) ... [2021-12-17 06:09:46,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:46" (1/1) ... [2021-12-17 06:09:46,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:46" (1/1) ... [2021-12-17 06:09:46,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:46" (1/1) ... [2021-12-17 06:09:46,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:46" (1/1) ... [2021-12-17 06:09:46,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:46" (1/1) ... [2021-12-17 06:09:46,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 06:09:46,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 06:09:46,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 06:09:46,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 06:09:46,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:46" (1/1) ... [2021-12-17 06:09:46,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:09:46,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 06:09:46,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 06:09:46,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 06:09:46,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 06:09:46,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-17 06:09:46,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 06:09:46,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 06:09:46,258 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 06:09:46,259 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 06:09:48,451 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 06:09:48,455 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 06:09:48,455 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 06:09:48,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:09:48 BoogieIcfgContainer [2021-12-17 06:09:48,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 06:09:48,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 06:09:48,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 06:09:48,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 06:09:48,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:09:45" (1/3) ... [2021-12-17 06:09:48,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e8f4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:09:48, skipping insertion in model container [2021-12-17 06:09:48,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:09:46" (2/3) ... [2021-12-17 06:09:48,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e8f4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:09:48, skipping insertion in model container [2021-12-17 06:09:48,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:09:48" (3/3) ... [2021-12-17 06:09:48,463 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8.i [2021-12-17 06:09:48,466 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 06:09:48,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 06:09:48,516 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 06:09:48,524 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 06:09:48,525 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 06:09:48,542 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) [2021-12-17 06:09:48,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-17 06:09:48,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 06:09:48,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-17 06:09:48,557 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 06:09:48,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 06:09:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-12-17 06:09:48,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 06:09:48,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445476088] [2021-12-17 06:09:48,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 06:09:48,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 06:09:48,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 06:09:48,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 06:09:48,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-17 06:09:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 06:09:49,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 06:09:49,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 06:09:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 06:09:49,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 06:09:49,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 06:09:49,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445476088] [2021-12-17 06:09:49,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445476088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 06:09:49,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 06:09:49,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 06:09:49,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934756460] [2021-12-17 06:09:49,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 06:09:49,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 06:09:49,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 06:09:49,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 06:09:49,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 06:09:49,137 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) [2021-12-17 06:09:49,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 06:09:49,147 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-12-17 06:09:49,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 06:09:49,149 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 [2021-12-17 06:09:49,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 06:09:49,153 INFO L225 Difference]: With dead ends: 19 [2021-12-17 06:09:49,153 INFO L226 Difference]: Without dead ends: 7 [2021-12-17 06:09:49,155 INFO L932 BasicCegarLoop]: 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 [2021-12-17 06:09:49,158 INFO L933 BasicCegarLoop]: 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 [2021-12-17 06:09:49,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 06:09:49,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-12-17 06:09:49,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-12-17 06:09:49,177 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) [2021-12-17 06:09:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-12-17 06:09:49,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-12-17 06:09:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 06:09:49,178 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-12-17 06:09:49,179 INFO L471 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) [2021-12-17 06:09:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-12-17 06:09:49,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-17 06:09:49,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 06:09:49,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-17 06:09:49,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-17 06:09:49,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 06:09:49,396 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 06:09:49,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 06:09:49,396 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-12-17 06:09:49,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 06:09:49,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095694756] [2021-12-17 06:09:49,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 06:09:49,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 06:09:49,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 06:09:49,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 06:09:49,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-17 06:11:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 06:11:13,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-17 06:11:13,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 06:11:28,621 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((|ULTIMATE.start_main_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.lt |ULTIMATE.start_main_~IN~0#1| .cse0) (= |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.geq |ULTIMATE.start_main_~IN~0#1| (_ +zero 8 24)))))) is different from false [2021-12-17 06:11:30,687 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((|ULTIMATE.start_main_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.lt |ULTIMATE.start_main_~IN~0#1| .cse0) (= |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.geq |ULTIMATE.start_main_~IN~0#1| (_ +zero 8 24)))))) is different from true [2021-12-17 06:12:21,146 WARN L838 $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.lt |ULTIMATE.start_main_~IN~0#1| .cse1) (fp.geq |ULTIMATE.start_main_~IN~0#1| (_ +zero 8 24))))) is different from false [2021-12-17 06:12:23,198 WARN L860 $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.lt |ULTIMATE.start_main_~IN~0#1| .cse1) (fp.geq |ULTIMATE.start_main_~IN~0#1| (_ +zero 8 24))))) is different from true [2021-12-17 06:12:23,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 06:12:23,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 06:12:23,199 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 06:12:23,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095694756] [2021-12-17 06:12:23,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095694756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 06:12:23,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 06:12:23,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 06:12:23,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383364225] [2021-12-17 06:12:23,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 06:12:23,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 06:12:23,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 06:12:23,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 06:12:23,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=11, Unknown=4, NotChecked=14, Total=42 [2021-12-17 06:12:23,201 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) [2021-12-17 06:12:25,599 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 [] [2021-12-17 06:12:25,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 06:12:25,600 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-12-17 06:12:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 06:12:25,704 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 [2021-12-17 06:12:25,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 06:12:25,705 INFO L225 Difference]: With dead ends: 7 [2021-12-17 06:12:25,705 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 06:12:25,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=18, Invalid=16, Unknown=4, NotChecked=18, Total=56 [2021-12-17 06:12:25,706 INFO L933 BasicCegarLoop]: 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 [2021-12-17 06:12:25,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 7 Unchecked, 2.2s Time] [2021-12-17 06:12:25,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 06:12:25,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 06:12:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 06:12:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 06:12:25,707 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-12-17 06:12:25,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 06:12:25,708 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 06:12:25,708 INFO L471 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) [2021-12-17 06:12:25,708 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 06:12:25,708 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 06:12:25,710 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 06:12:25,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-17 06:12:25,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 06:12:25,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 06:12:25,917 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 06:12:25,918 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 06:12:25,918 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 06:12:25,918 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 06:12:25,918 INFO L858 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-12-17 06:12:25,918 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 38) no Hoare annotation was computed. [2021-12-17 06:12:25,919 INFO L858 garLoopResultBuilder]: For program point L23(lines 23 25) no Hoare annotation was computed. [2021-12-17 06:12:25,919 INFO L861 garLoopResultBuilder]: At program point L40(lines 27 41) the Hoare annotation is: true [2021-12-17 06:12:25,919 INFO L858 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-12-17 06:12:25,919 INFO L858 garLoopResultBuilder]: For program point L37(lines 37 38) no Hoare annotation was computed. [2021-12-17 06:12:25,919 INFO L858 garLoopResultBuilder]: For program point L37-2(lines 37 38) no Hoare annotation was computed. [2021-12-17 06:12:25,922 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-17 06:12:25,923 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 06:12:25,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 06:12:25 BoogieIcfgContainer [2021-12-17 06:12:25,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 06:12:25,930 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 06:12:25,930 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 06:12:25,930 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 06:12:25,930 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:09:48" (3/4) ... [2021-12-17 06:12:25,933 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 06:12:25,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-12-17 06:12:25,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-17 06:12:25,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 06:12:25,943 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 06:12:25,976 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 06:12:25,981 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 06:12:25,982 INFO L158 Benchmark]: Toolchain (without parser) took 160097.92ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 37.5MB in the beginning and 36.9MB in the end (delta: 600.1kB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2021-12-17 06:12:25,982 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory was 40.4MB in the beginning and 40.3MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:12:25,983 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.94ms. Allocated memory is still 58.7MB. Free memory was 37.2MB in the beginning and 41.8MB in the end (delta: -4.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-17 06:12:25,983 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.95ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 40.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:12:25,983 INFO L158 Benchmark]: Boogie Preprocessor took 36.64ms. Allocated memory is still 58.7MB. Free memory was 40.2MB in the beginning and 39.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:12:25,984 INFO L158 Benchmark]: RCFGBuilder took 2299.11ms. Allocated memory is still 58.7MB. Free memory was 39.2MB in the beginning and 31.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 06:12:25,984 INFO L158 Benchmark]: TraceAbstraction took 157470.50ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 30.8MB in the beginning and 39.3MB in the end (delta: -8.5MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2021-12-17 06:12:25,984 INFO L158 Benchmark]: Witness Printer took 51.18ms. Allocated memory is still 71.3MB. Free memory was 39.3MB in the beginning and 36.9MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-17 06:12:25,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory was 40.4MB in the beginning and 40.3MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.94ms. Allocated memory is still 58.7MB. Free memory was 37.2MB in the beginning and 41.8MB in the end (delta: -4.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.95ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 40.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.64ms. Allocated memory is still 58.7MB. Free memory was 40.2MB in the beginning and 39.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2299.11ms. Allocated memory is still 58.7MB. Free memory was 39.2MB in the beginning and 31.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 157470.50ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 30.8MB in the beginning and 39.3MB in the end (delta: -8.5MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * Witness Printer took 51.18ms. Allocated memory is still 71.3MB. Free memory was 39.3MB in the beginning and 36.9MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 157.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 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, 8.7s 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, 84.3s SatisfiabilityAnalysisTime, 70.0s 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! [2021-12-17 06:12:26,183 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