./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/square_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_7.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 3d7be53722c5d42bf1d9edf2afa226189511eb3fd7eebad6deacafa302ecd65f --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 13:41:52,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 13:41:52,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 13:41:52,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 13:41:52,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 13:41:52,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 13:41:52,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 13:41:52,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 13:41:52,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 13:41:52,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 13:41:52,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 13:41:52,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 13:41:52,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 13:41:52,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 13:41:52,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 13:41:52,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 13:41:52,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 13:41:52,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 13:41:52,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 13:41:52,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 13:41:52,733 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 13:41:52,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 13:41:52,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 13:41:52,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 13:41:52,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 13:41:52,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 13:41:52,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 13:41:52,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 13:41:52,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 13:41:52,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 13:41:52,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 13:41:52,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 13:41:52,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 13:41:52,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 13:41:52,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 13:41:52,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 13:41:52,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 13:41:52,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 13:41:52,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 13:41:52,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 13:41:52,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 13:41:52,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 13:41:52,745 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 13:41:52,769 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 13:41:52,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 13:41:52,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 13:41:52,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 13:41:52,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 13:41:52,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 13:41:52,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 13:41:52,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 13:41:52,771 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 13:41:52,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 13:41:52,772 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 13:41:52,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 13:41:52,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 13:41:52,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 13:41:52,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 13:41:52,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 13:41:52,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 13:41:52,773 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 13:41:52,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 13:41:52,773 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 13:41:52,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 13:41:52,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 13:41:52,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 13:41:52,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 13:41:52,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:41:52,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 13:41:52,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 13:41:52,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 13:41:52,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 13:41:52,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 13:41:52,775 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 13:41:52,775 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 13:41:52,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 13:41:52,776 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d7be53722c5d42bf1d9edf2afa226189511eb3fd7eebad6deacafa302ecd65f [2022-07-22 13:41:52,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 13:41:52,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 13:41:52,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 13:41:52,969 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 13:41:52,969 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 13:41:52,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_7.i [2022-07-22 13:41:53,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cfd0f145/8d0748efc15348d7b71a62a39af6a2d2/FLAG7b5fcb325 [2022-07-22 13:41:53,349 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 13:41:53,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_7.i [2022-07-22 13:41:53,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cfd0f145/8d0748efc15348d7b71a62a39af6a2d2/FLAG7b5fcb325 [2022-07-22 13:41:53,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cfd0f145/8d0748efc15348d7b71a62a39af6a2d2 [2022-07-22 13:41:53,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 13:41:53,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 13:41:53,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 13:41:53,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 13:41:53,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 13:41:53,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:41:53" (1/1) ... [2022-07-22 13:41:53,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dadb314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:53, skipping insertion in model container [2022-07-22 13:41:53,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:41:53" (1/1) ... [2022-07-22 13:41:53,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 13:41:53,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 13:41:53,912 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_7.i[1625,1638] [2022-07-22 13:41:53,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:41:53,919 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 13:41:53,928 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_7.i[1625,1638] [2022-07-22 13:41:53,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:41:53,937 INFO L208 MainTranslator]: Completed translation [2022-07-22 13:41:53,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:53 WrapperNode [2022-07-22 13:41:53,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 13:41:53,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 13:41:53,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 13:41:53,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 13:41:53,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:53" (1/1) ... [2022-07-22 13:41:53,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:53" (1/1) ... [2022-07-22 13:41:53,957 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2022-07-22 13:41:53,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 13:41:53,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 13:41:53,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 13:41:53,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 13:41:53,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:53" (1/1) ... [2022-07-22 13:41:53,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:53" (1/1) ... [2022-07-22 13:41:53,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:53" (1/1) ... [2022-07-22 13:41:53,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:53" (1/1) ... [2022-07-22 13:41:53,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:53" (1/1) ... [2022-07-22 13:41:53,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:53" (1/1) ... [2022-07-22 13:41:53,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:53" (1/1) ... [2022-07-22 13:41:53,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 13:41:53,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 13:41:53,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 13:41:53,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 13:41:53,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:53" (1/1) ... [2022-07-22 13:41:53,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:41:53,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:41:53,998 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) [2022-07-22 13:41:54,011 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 [2022-07-22 13:41:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 13:41:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 13:41:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 13:41:54,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 13:41:54,065 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 13:41:54,066 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 13:41:54,128 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 13:41:54,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 13:41:54,132 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 13:41:54,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:41:54 BoogieIcfgContainer [2022-07-22 13:41:54,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 13:41:54,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 13:41:54,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 13:41:54,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 13:41:54,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 01:41:53" (1/3) ... [2022-07-22 13:41:54,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a95cbf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:41:54, skipping insertion in model container [2022-07-22 13:41:54,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:53" (2/3) ... [2022-07-22 13:41:54,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a95cbf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:41:54, skipping insertion in model container [2022-07-22 13:41:54,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:41:54" (3/3) ... [2022-07-22 13:41:54,138 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7.i [2022-07-22 13:41:54,147 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 13:41:54,147 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 13:41:54,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 13:41:54,181 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@72da835a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2984ad6 [2022-07-22 13:41:54,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 13:41:54,184 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) [2022-07-22 13:41:54,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 13:41:54,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:41:54,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 13:41:54,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:41:54,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:41:54,193 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2022-07-22 13:41:54,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:41:54,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49563402] [2022-07-22 13:41:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:41:54,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:41:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:41:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 13:41:54,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:41:54,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49563402] [2022-07-22 13:41:54,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49563402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:41:54,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:41:54,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 13:41:54,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201295468] [2022-07-22 13:41:54,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:41:54,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 13:41:54,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:41:54,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 13:41:54,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 13:41:54,313 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) [2022-07-22 13:41:54,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:41:54,323 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-07-22 13:41:54,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 13:41:54,324 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 [2022-07-22 13:41:54,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:41:54,329 INFO L225 Difference]: With dead ends: 19 [2022-07-22 13:41:54,330 INFO L226 Difference]: Without dead ends: 7 [2022-07-22 13:41:54,332 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 [2022-07-22 13:41:54,338 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 [2022-07-22 13:41:54,339 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] [2022-07-22 13:41:54,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-07-22 13:41:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-07-22 13:41:54,363 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) [2022-07-22 13:41:54,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-07-22 13:41:54,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-07-22 13:41:54,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:41:54,365 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-07-22 13:41:54,366 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) [2022-07-22 13:41:54,366 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-07-22 13:41:54,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 13:41:54,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:41:54,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 13:41:54,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 13:41:54,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:41:54,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:41:54,368 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2022-07-22 13:41:54,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:41:54,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571351715] [2022-07-22 13:41:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:41:54,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:41:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 13:41:54,405 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 13:41:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 13:41:54,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 13:41:54,432 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 13:41:54,433 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 13:41:54,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 13:41:54,437 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 13:41:54,440 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 13:41:54,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 01:41:54 BoogieIcfgContainer [2022-07-22 13:41:54,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 13:41:54,461 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 13:41:54,461 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 13:41:54,461 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 13:41:54,462 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:41:54" (3/4) ... [2022-07-22 13:41:54,463 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 13:41:54,464 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 13:41:54,465 INFO L158 Benchmark]: Toolchain (without parser) took 683.35ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 74.0MB in the beginning and 99.5MB in the end (delta: -25.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:41:54,465 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 104.9MB. Free memory was 59.1MB in the beginning and 59.0MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:41:54,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.15ms. Allocated memory is still 104.9MB. Free memory was 73.8MB in the beginning and 79.8MB in the end (delta: -6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 13:41:54,468 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.75ms. Allocated memory is still 104.9MB. Free memory was 79.8MB in the beginning and 78.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 13:41:54,469 INFO L158 Benchmark]: Boogie Preprocessor took 15.89ms. Allocated memory is still 104.9MB. Free memory was 78.5MB in the beginning and 77.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:41:54,470 INFO L158 Benchmark]: RCFGBuilder took 157.64ms. Allocated memory is still 104.9MB. Free memory was 77.4MB in the beginning and 69.1MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 13:41:54,471 INFO L158 Benchmark]: TraceAbstraction took 326.24ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 68.4MB in the beginning and 100.1MB in the end (delta: -31.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:41:54,471 INFO L158 Benchmark]: Witness Printer took 3.43ms. Allocated memory is still 125.8MB. Free memory was 100.1MB in the beginning and 99.5MB in the end (delta: 631.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:41:54,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 104.9MB. Free memory was 59.1MB in the beginning and 59.0MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 155.15ms. Allocated memory is still 104.9MB. Free memory was 73.8MB in the beginning and 79.8MB in the end (delta: -6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.75ms. Allocated memory is still 104.9MB. Free memory was 79.8MB in the beginning and 78.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.89ms. Allocated memory is still 104.9MB. Free memory was 78.5MB in the beginning and 77.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 157.64ms. Allocated memory is still 104.9MB. Free memory was 77.4MB in the beginning and 69.1MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 326.24ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 68.4MB in the beginning and 100.1MB in the end (delta: -31.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.43ms. Allocated memory is still 125.8MB. Free memory was 100.1MB in the beginning and 99.5MB in the end (delta: 631.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 38]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 37, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L32] float x = IN; [L34-L35] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L37] COND TRUE !(result >= 0.0f && result < 1.4f) 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: 0.1s, 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 [2022-07-22 13:41:54,508 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_7.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 3d7be53722c5d42bf1d9edf2afa226189511eb3fd7eebad6deacafa302ecd65f --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 13:41:56,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 13:41:56,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 13:41:56,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 13:41:56,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 13:41:56,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 13:41:56,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 13:41:56,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 13:41:56,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 13:41:56,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 13:41:56,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 13:41:56,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 13:41:56,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 13:41:56,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 13:41:56,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 13:41:56,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 13:41:56,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 13:41:56,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 13:41:56,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 13:41:56,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 13:41:56,536 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 13:41:56,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 13:41:56,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 13:41:56,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 13:41:56,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 13:41:56,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 13:41:56,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 13:41:56,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 13:41:56,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 13:41:56,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 13:41:56,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 13:41:56,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 13:41:56,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 13:41:56,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 13:41:56,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 13:41:56,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 13:41:56,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 13:41:56,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 13:41:56,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 13:41:56,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 13:41:56,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 13:41:56,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 13:41:56,560 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 13:41:56,584 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 13:41:56,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 13:41:56,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 13:41:56,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 13:41:56,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 13:41:56,586 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 13:41:56,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 13:41:56,587 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 13:41:56,587 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 13:41:56,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 13:41:56,588 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 13:41:56,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 13:41:56,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 13:41:56,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 13:41:56,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 13:41:56,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 13:41:56,589 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 13:41:56,589 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 13:41:56,589 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 13:41:56,589 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 13:41:56,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 13:41:56,589 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 13:41:56,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 13:41:56,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 13:41:56,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 13:41:56,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 13:41:56,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:41:56,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 13:41:56,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 13:41:56,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 13:41:56,591 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 13:41:56,591 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 13:41:56,591 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 13:41:56,591 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 13:41:56,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 13:41:56,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 13:41:56,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d7be53722c5d42bf1d9edf2afa226189511eb3fd7eebad6deacafa302ecd65f [2022-07-22 13:41:56,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 13:41:56,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 13:41:56,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 13:41:56,872 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 13:41:56,872 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 13:41:56,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_7.i [2022-07-22 13:41:56,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547df70fa/90343c62011f423b87b658882060ceb7/FLAGf7a140ef2 [2022-07-22 13:41:57,261 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 13:41:57,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_7.i [2022-07-22 13:41:57,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547df70fa/90343c62011f423b87b658882060ceb7/FLAGf7a140ef2 [2022-07-22 13:41:57,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547df70fa/90343c62011f423b87b658882060ceb7 [2022-07-22 13:41:57,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 13:41:57,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 13:41:57,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 13:41:57,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 13:41:57,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 13:41:57,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:41:57" (1/1) ... [2022-07-22 13:41:57,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ddb447d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:57, skipping insertion in model container [2022-07-22 13:41:57,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:41:57" (1/1) ... [2022-07-22 13:41:57,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 13:41:57,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 13:41:57,420 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_7.i[1625,1638] [2022-07-22 13:41:57,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:41:57,433 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 13:41:57,482 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_7.i[1625,1638] [2022-07-22 13:41:57,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:41:57,498 INFO L208 MainTranslator]: Completed translation [2022-07-22 13:41:57,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:57 WrapperNode [2022-07-22 13:41:57,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 13:41:57,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 13:41:57,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 13:41:57,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 13:41:57,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:57" (1/1) ... [2022-07-22 13:41:57,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:57" (1/1) ... [2022-07-22 13:41:57,522 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2022-07-22 13:41:57,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 13:41:57,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 13:41:57,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 13:41:57,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 13:41:57,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:57" (1/1) ... [2022-07-22 13:41:57,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:57" (1/1) ... [2022-07-22 13:41:57,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:57" (1/1) ... [2022-07-22 13:41:57,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:57" (1/1) ... [2022-07-22 13:41:57,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:57" (1/1) ... [2022-07-22 13:41:57,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:57" (1/1) ... [2022-07-22 13:41:57,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:57" (1/1) ... [2022-07-22 13:41:57,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 13:41:57,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 13:41:57,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 13:41:57,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 13:41:57,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:57" (1/1) ... [2022-07-22 13:41:57,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:41:57,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:41:57,578 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) [2022-07-22 13:41:57,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 13:41:57,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 13:41:57,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 13:41:57,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 13:41:57,596 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 [2022-07-22 13:41:57,647 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 13:41:57,648 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 13:41:59,795 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 13:41:59,799 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 13:41:59,799 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 13:41:59,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:41:59 BoogieIcfgContainer [2022-07-22 13:41:59,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 13:41:59,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 13:41:59,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 13:41:59,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 13:41:59,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 01:41:57" (1/3) ... [2022-07-22 13:41:59,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5a514e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:41:59, skipping insertion in model container [2022-07-22 13:41:59,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:41:57" (2/3) ... [2022-07-22 13:41:59,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5a514e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:41:59, skipping insertion in model container [2022-07-22 13:41:59,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:41:59" (3/3) ... [2022-07-22 13:41:59,805 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7.i [2022-07-22 13:41:59,814 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 13:41:59,827 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 13:41:59,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 13:41:59,880 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@3adb3d1e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@51595dfe [2022-07-22 13:41:59,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 13:41:59,884 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) [2022-07-22 13:41:59,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 13:41:59,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:41:59,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 13:41:59,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:41:59,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:41:59,891 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2022-07-22 13:41:59,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 13:41:59,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592004435] [2022-07-22 13:41:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:41:59,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 13:41:59,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 13:41:59,912 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) [2022-07-22 13:41:59,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 13:42:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:42:00,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 13:42:00,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:42:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 13:42:00,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:42:00,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 13:42:00,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592004435] [2022-07-22 13:42:00,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592004435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:42:00,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:42:00,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 13:42:00,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556196948] [2022-07-22 13:42:00,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:42:00,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 13:42:00,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 13:42:00,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 13:42:00,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 13:42:00,412 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) [2022-07-22 13:42:00,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:42:00,420 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-07-22 13:42:00,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 13:42:00,421 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 [2022-07-22 13:42:00,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:42:00,425 INFO L225 Difference]: With dead ends: 19 [2022-07-22 13:42:00,426 INFO L226 Difference]: Without dead ends: 7 [2022-07-22 13:42:00,427 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 [2022-07-22 13:42:00,430 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 [2022-07-22 13:42:00,431 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] [2022-07-22 13:42:00,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-07-22 13:42:00,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-07-22 13:42:00,448 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) [2022-07-22 13:42:00,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-07-22 13:42:00,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-07-22 13:42:00,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:42:00,450 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-07-22 13:42:00,451 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) [2022-07-22 13:42:00,451 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-07-22 13:42:00,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 13:42:00,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:42:00,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 13:42:00,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-22 13:42:00,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 13:42:00,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:42:00,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:42:00,669 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2022-07-22 13:42:00,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 13:42:00,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252013507] [2022-07-22 13:42:00,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:42:00,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 13:42:00,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 13:42:00,671 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) [2022-07-22 13:42:00,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process