./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/square_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/square_2.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 8a6cb7e7408af12d21fe6db26ed13525a6aeea3116434a553f8758caff4c6db4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:02:51,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:02:51,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:02:51,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:02:51,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:02:51,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:02:51,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:02:51,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:02:51,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:02:51,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:02:51,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:02:51,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:02:51,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:02:51,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:02:51,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:02:51,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:02:51,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:02:51,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:02:51,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:02:51,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:02:51,779 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:02:51,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:02:51,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:02:51,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:02:51,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:02:51,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:02:51,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:02:51,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:02:51,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:02:51,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:02:51,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:02:51,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:02:51,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:02:51,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:02:51,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:02:51,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:02:51,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:02:51,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:02:51,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:02:51,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:02:51,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:02:51,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:02:51,810 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 01:02:51,841 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:02:51,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:02:51,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:02:51,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:02:51,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:02:51,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:02:51,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:02:51,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:02:51,844 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:02:51,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:02:51,845 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:02:51,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 01:02:51,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:02:51,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:02:51,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:02:51,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:02:51,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:02:51,846 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:02:51,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:02:51,846 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:02:51,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:02:51,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:02:51,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:02:51,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:02:51,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:02:51,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:02:51,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:02:51,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:02:51,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 01:02:51,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 01:02:51,849 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:02:51,849 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:02:51,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:02:51,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a6cb7e7408af12d21fe6db26ed13525a6aeea3116434a553f8758caff4c6db4 [2022-07-21 01:02:52,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:02:52,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:02:52,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:02:52,188 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:02:52,189 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:02:52,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_2.i [2022-07-21 01:02:52,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785c73811/340864f4fb4e455c8427464d1b9bcef1/FLAG4e056760e [2022-07-21 01:02:52,658 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:02:52,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_2.i [2022-07-21 01:02:52,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785c73811/340864f4fb4e455c8427464d1b9bcef1/FLAG4e056760e [2022-07-21 01:02:52,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785c73811/340864f4fb4e455c8427464d1b9bcef1 [2022-07-21 01:02:52,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:02:52,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:02:52,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:02:52,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:02:52,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:02:52,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:02:52" (1/1) ... [2022-07-21 01:02:52,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48ad0cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:52, skipping insertion in model container [2022-07-21 01:02:52,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:02:52" (1/1) ... [2022-07-21 01:02:52,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:02:52,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:02:52,877 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_2.i[1627,1640] [2022-07-21 01:02:52,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:02:52,891 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:02:52,917 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_2.i[1627,1640] [2022-07-21 01:02:52,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:02:52,946 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:02:52,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:52 WrapperNode [2022-07-21 01:02:52,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:02:52,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:02:52,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:02:52,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:02:52,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:52" (1/1) ... [2022-07-21 01:02:52,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:52" (1/1) ... [2022-07-21 01:02:52,976 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2022-07-21 01:02:52,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:02:52,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:02:52,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:02:52,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:02:52,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:52" (1/1) ... [2022-07-21 01:02:52,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:52" (1/1) ... [2022-07-21 01:02:52,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:52" (1/1) ... [2022-07-21 01:02:52,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:52" (1/1) ... [2022-07-21 01:02:52,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:52" (1/1) ... [2022-07-21 01:02:52,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:52" (1/1) ... [2022-07-21 01:02:52,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:52" (1/1) ... [2022-07-21 01:02:53,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:02:53,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:02:53,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:02:53,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:02:53,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:52" (1/1) ... [2022-07-21 01:02:53,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:02:53,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:02:53,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 01:02:53,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 01:02:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:02:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 01:02:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:02:53,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:02:53,132 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:02:53,134 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:02:53,238 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:02:53,243 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:02:53,244 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 01:02:53,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:02:53 BoogieIcfgContainer [2022-07-21 01:02:53,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:02:53,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:02:53,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:02:53,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:02:53,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:02:52" (1/3) ... [2022-07-21 01:02:53,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae2c8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:02:53, skipping insertion in model container [2022-07-21 01:02:53,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:52" (2/3) ... [2022-07-21 01:02:53,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae2c8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:02:53, skipping insertion in model container [2022-07-21 01:02:53,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:02:53" (3/3) ... [2022-07-21 01:02:53,257 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2.i [2022-07-21 01:02:53,270 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:02:53,271 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:02:53,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:02:53,342 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@34e6467b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a506cf9 [2022-07-21 01:02:53,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:02:53,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:02:53,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 01:02:53,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:02:53,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 01:02:53,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:02:53,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:02:53,361 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2022-07-21 01:02:53,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:02:53,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842427670] [2022-07-21 01:02:53,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:02:53,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:02:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:02:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:02:53,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:02:53,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842427670] [2022-07-21 01:02:53,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842427670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:02:53,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:02:53,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:02:53,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154215622] [2022-07-21 01:02:53,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:02:53,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:02:53,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:02:53,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:02:53,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:02:53,534 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:02:53,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:02:53,546 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-07-21 01:02:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:02:53,548 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-21 01:02:53,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:02:53,555 INFO L225 Difference]: With dead ends: 19 [2022-07-21 01:02:53,555 INFO L226 Difference]: Without dead ends: 7 [2022-07-21 01:02:53,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:02:53,562 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:02:53,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:02:53,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-07-21 01:02:53,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-07-21 01:02:53,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:02:53,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-07-21 01:02:53,589 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-07-21 01:02:53,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:02:53,590 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-07-21 01:02:53,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:02:53,591 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-07-21 01:02:53,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 01:02:53,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:02:53,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 01:02:53,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 01:02:53,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:02:53,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:02:53,593 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2022-07-21 01:02:53,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:02:53,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224652514] [2022-07-21 01:02:53,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:02:53,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:02:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:02:53,633 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 01:02:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:02:53,668 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 01:02:53,669 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 01:02:53,670 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:02:53,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 01:02:53,677 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 01:02:53,681 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:02:53,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:02:53 BoogieIcfgContainer [2022-07-21 01:02:53,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:02:53,708 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:02:53,708 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:02:53,708 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:02:53,709 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:02:53" (3/4) ... [2022-07-21 01:02:53,712 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 01:02:53,713 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:02:53,714 INFO L158 Benchmark]: Toolchain (without parser) took 1028.09ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 41.4MB in the beginning and 42.8MB in the end (delta: -1.4MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2022-07-21 01:02:53,715 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 60.8MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:02:53,718 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.12ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 44.7MB in the end (delta: -3.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 01:02:53,719 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.58ms. Allocated memory is still 60.8MB. Free memory was 44.5MB in the beginning and 43.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:02:53,719 INFO L158 Benchmark]: Boogie Preprocessor took 22.78ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 42.2MB in the end (delta: 938.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:02:53,722 INFO L158 Benchmark]: RCFGBuilder took 243.96ms. Allocated memory is still 60.8MB. Free memory was 42.0MB in the beginning and 33.8MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 01:02:53,722 INFO L158 Benchmark]: TraceAbstraction took 459.03ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 33.4MB in the beginning and 43.1MB in the end (delta: -9.7MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2022-07-21 01:02:53,723 INFO L158 Benchmark]: Witness Printer took 4.89ms. Allocated memory is still 77.6MB. Free memory was 43.1MB in the beginning and 42.8MB in the end (delta: 341.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:02:53,729 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 60.8MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.12ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 44.7MB in the end (delta: -3.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.58ms. Allocated memory is still 60.8MB. Free memory was 44.5MB in the beginning and 43.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.78ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 42.2MB in the end (delta: 938.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 243.96ms. Allocated memory is still 60.8MB. Free memory was 42.0MB in the beginning and 33.8MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 459.03ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 33.4MB in the beginning and 43.1MB in the end (delta: -9.7MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Witness Printer took 4.89ms. Allocated memory is still 77.6MB. Free memory was 43.1MB in the beginning and 42.8MB in the end (delta: 341.6kB). 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 < 1.398f) 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: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 10 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 01:02:53,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/square_2.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 8a6cb7e7408af12d21fe6db26ed13525a6aeea3116434a553f8758caff4c6db4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:02:55,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:02:55,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:02:55,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:02:55,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:02:55,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:02:55,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:02:55,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:02:55,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:02:55,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:02:55,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:02:55,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:02:55,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:02:55,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:02:55,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:02:55,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:02:55,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:02:55,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:02:55,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:02:55,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:02:55,726 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:02:55,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:02:55,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:02:55,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:02:55,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:02:55,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:02:55,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:02:55,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:02:55,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:02:55,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:02:55,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:02:55,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:02:55,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:02:55,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:02:55,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:02:55,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:02:55,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:02:55,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:02:55,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:02:55,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:02:55,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:02:55,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:02:55,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 01:02:55,782 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:02:55,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:02:55,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:02:55,786 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:02:55,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:02:55,787 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:02:55,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:02:55,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:02:55,788 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:02:55,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:02:55,789 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:02:55,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:02:55,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:02:55,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:02:55,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:02:55,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:02:55,802 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 01:02:55,802 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 01:02:55,802 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 01:02:55,802 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:02:55,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:02:55,802 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:02:55,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:02:55,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:02:55,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:02:55,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:02:55,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:02:55,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:02:55,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:02:55,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:02:55,804 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 01:02:55,804 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 01:02:55,804 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:02:55,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:02:55,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:02:55,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 01:02:55,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a6cb7e7408af12d21fe6db26ed13525a6aeea3116434a553f8758caff4c6db4 [2022-07-21 01:02:56,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:02:56,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:02:56,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:02:56,162 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:02:56,162 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:02:56,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_2.i [2022-07-21 01:02:56,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e645704e/c106122a76fb4577bdbee1045ab71ded/FLAGb368c8ca1 [2022-07-21 01:02:56,686 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:02:56,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_2.i [2022-07-21 01:02:56,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e645704e/c106122a76fb4577bdbee1045ab71ded/FLAGb368c8ca1 [2022-07-21 01:02:57,077 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e645704e/c106122a76fb4577bdbee1045ab71ded [2022-07-21 01:02:57,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:02:57,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:02:57,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:02:57,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:02:57,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:02:57,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:02:57" (1/1) ... [2022-07-21 01:02:57,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e760179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:57, skipping insertion in model container [2022-07-21 01:02:57,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:02:57" (1/1) ... [2022-07-21 01:02:57,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:02:57,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:02:57,240 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_2.i[1627,1640] [2022-07-21 01:02:57,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:02:57,253 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:02:57,266 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_2.i[1627,1640] [2022-07-21 01:02:57,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:02:57,286 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:02:57,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:57 WrapperNode [2022-07-21 01:02:57,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:02:57,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:02:57,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:02:57,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:02:57,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:57" (1/1) ... [2022-07-21 01:02:57,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:57" (1/1) ... [2022-07-21 01:02:57,338 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2022-07-21 01:02:57,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:02:57,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:02:57,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:02:57,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:02:57,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:57" (1/1) ... [2022-07-21 01:02:57,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:57" (1/1) ... [2022-07-21 01:02:57,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:57" (1/1) ... [2022-07-21 01:02:57,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:57" (1/1) ... [2022-07-21 01:02:57,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:57" (1/1) ... [2022-07-21 01:02:57,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:57" (1/1) ... [2022-07-21 01:02:57,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:57" (1/1) ... [2022-07-21 01:02:57,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:02:57,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:02:57,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:02:57,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:02:57,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:57" (1/1) ... [2022-07-21 01:02:57,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:02:57,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:02:57,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 01:02:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:02:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 01:02:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:02:57,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:02:57,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 01:02:57,521 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:02:57,523 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:02:59,709 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:02:59,716 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:02:59,716 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 01:02:59,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:02:59 BoogieIcfgContainer [2022-07-21 01:02:59,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:02:59,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:02:59,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:02:59,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:02:59,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:02:57" (1/3) ... [2022-07-21 01:02:59,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623967cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:02:59, skipping insertion in model container [2022-07-21 01:02:59,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:57" (2/3) ... [2022-07-21 01:02:59,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623967cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:02:59, skipping insertion in model container [2022-07-21 01:02:59,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:02:59" (3/3) ... [2022-07-21 01:02:59,726 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2.i [2022-07-21 01:02:59,737 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:02:59,737 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:02:59,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:02:59,784 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@321bf604, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@19eb557a [2022-07-21 01:02:59,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:02:59,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:02:59,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 01:02:59,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:02:59,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 01:02:59,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:02:59,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:02:59,800 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2022-07-21 01:02:59,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:02:59,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484269924] [2022-07-21 01:02:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:02:59,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:02:59,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:02:59,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:02:59,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 01:03:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:03:00,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 01:03:00,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:03:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:03:00,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:03:00,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:03:00,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484269924] [2022-07-21 01:03:00,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484269924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:03:00,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:03:00,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:03:00,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309838811] [2022-07-21 01:03:00,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:03:00,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:03:00,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:03:00,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:03:00,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:03:00,436 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:03:00,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:03:00,454 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-07-21 01:03:00,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:03:00,456 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-21 01:03:00,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:03:00,462 INFO L225 Difference]: With dead ends: 19 [2022-07-21 01:03:00,462 INFO L226 Difference]: Without dead ends: 7 [2022-07-21 01:03:00,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:03:00,472 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:03:00,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:03:00,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-07-21 01:03:00,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-07-21 01:03:00,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:03:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-07-21 01:03:00,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-07-21 01:03:00,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:03:00,499 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-07-21 01:03:00,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:03:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-07-21 01:03:00,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 01:03:00,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:03:00,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 01:03:00,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 01:03:00,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:03:00,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:03:00,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:03:00,717 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2022-07-21 01:03:00,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:03:00,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063720711] [2022-07-21 01:03:00,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:03:00,718 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:03:00,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:03:00,719 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:03:00,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 01:03:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:03:18,628 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 01:06:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:06:55,595 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-21 01:06:55,596 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 01:06:55,597 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:06:55,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 01:06:55,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:06:55,802 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 01:06:55,806 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:06:55,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:06:55 BoogieIcfgContainer [2022-07-21 01:06:55,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:06:55,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:06:55,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:06:55,824 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:06:55,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:02:59" (3/4) ... [2022-07-21 01:06:55,826 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 01:06:55,855 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 01:06:55,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:06:55,857 INFO L158 Benchmark]: Toolchain (without parser) took 238774.79ms. Allocated memory is still 69.2MB. Free memory was 52.6MB in the beginning and 42.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2022-07-21 01:06:55,857 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 69.2MB. Free memory was 52.0MB in the beginning and 52.0MB in the end (delta: 53.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:06:55,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.58ms. Allocated memory is still 69.2MB. Free memory was 52.3MB in the beginning and 53.5MB in the end (delta: -1.2MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2022-07-21 01:06:55,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.10ms. Allocated memory is still 69.2MB. Free memory was 53.5MB in the beginning and 51.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:06:55,858 INFO L158 Benchmark]: Boogie Preprocessor took 43.47ms. Allocated memory is still 69.2MB. Free memory was 51.9MB in the beginning and 50.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:06:55,859 INFO L158 Benchmark]: RCFGBuilder took 2333.28ms. Allocated memory is still 69.2MB. Free memory was 50.8MB in the beginning and 42.6MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 01:06:55,859 INFO L158 Benchmark]: TraceAbstraction took 236103.02ms. Allocated memory is still 69.2MB. Free memory was 42.1MB in the beginning and 43.9MB in the end (delta: -1.8MB). Peak memory consumption was 1.5MB. Max. memory is 16.1GB. [2022-07-21 01:06:55,860 INFO L158 Benchmark]: Witness Printer took 32.15ms. Allocated memory is still 69.2MB. Free memory was 43.9MB in the beginning and 42.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:06:55,862 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 69.2MB. Free memory was 52.0MB in the beginning and 52.0MB in the end (delta: 53.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.58ms. Allocated memory is still 69.2MB. Free memory was 52.3MB in the beginning and 53.5MB in the end (delta: -1.2MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.10ms. Allocated memory is still 69.2MB. Free memory was 53.5MB in the beginning and 51.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.47ms. Allocated memory is still 69.2MB. Free memory was 51.9MB in the beginning and 50.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2333.28ms. Allocated memory is still 69.2MB. Free memory was 50.8MB in the beginning and 42.6MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 236103.02ms. Allocated memory is still 69.2MB. Free memory was 42.1MB in the beginning and 43.9MB in the end (delta: -1.8MB). Peak memory consumption was 1.5MB. Max. memory is 16.1GB. * Witness Printer took 32.15ms. Allocated memory is still 69.2MB. Free memory was 43.9MB in the beginning and 42.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 38]: a call to reach_error is reachable a call to reach_error is reachable We found a 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=0.9999988675117493, result=1.3984370231628418, x=0.9999988675117493] [L37] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=0.9999988675117493, result=1.3984370231628418, x=0.9999988675117493] [L38] reach_error() VAL [IN=0.9999988675117493, result=1.3984370231628418, x=0.9999988675117493] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 236.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 10 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 5 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, 18.4s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 20 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2022-07-21 01:06:55,949 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE