./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/arctan_Pade.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/arctan_Pade.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:23:23,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:23:23,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:23:23,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:23:23,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:23:23,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:23:23,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:23:23,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:23:23,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:23:23,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:23:23,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:23:23,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:23:23,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:23:23,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:23:23,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:23:23,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:23:23,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:23:23,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:23:23,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:23:23,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:23:23,606 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:23:23,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:23:23,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:23:23,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:23:23,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:23:23,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:23:23,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:23:23,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:23:23,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:23:23,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:23:23,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:23:23,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:23:23,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:23:23,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:23:23,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:23:23,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:23:23,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:23:23,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:23:23,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:23:23,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:23:23,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:23:23,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:23:23,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 02:23:23,662 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:23:23,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:23:23,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:23:23,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:23:23,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:23:23,664 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:23:23,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:23:23,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:23:23,665 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:23:23,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:23:23,666 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:23:23,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 02:23:23,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:23:23,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:23:23,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:23:23,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:23:23,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:23:23,667 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:23:23,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:23:23,668 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:23:23,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:23:23,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:23:23,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:23:23,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:23:23,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:23:23,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:23:23,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:23:23,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:23:23,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 02:23:23,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 02:23:23,670 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:23:23,671 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:23:23,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:23:23,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 [2022-07-12 02:23:23,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:23:23,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:23:23,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:23:23,928 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:23:23,929 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:23:23,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/arctan_Pade.c [2022-07-12 02:23:23,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7909d796/51c86799178f40498e8a1617d9571ee9/FLAG3e71898e3 [2022-07-12 02:23:24,358 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:23:24,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/arctan_Pade.c [2022-07-12 02:23:24,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7909d796/51c86799178f40498e8a1617d9571ee9/FLAG3e71898e3 [2022-07-12 02:23:24,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7909d796/51c86799178f40498e8a1617d9571ee9 [2022-07-12 02:23:24,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:23:24,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:23:24,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:23:24,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:23:24,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:23:24,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:23:24" (1/1) ... [2022-07-12 02:23:24,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66971ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:24, skipping insertion in model container [2022-07-12 02:23:24,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:23:24" (1/1) ... [2022-07-12 02:23:24,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:23:24,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:23:24,920 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2022-07-12 02:23:24,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:23:24,951 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:23:24,961 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2022-07-12 02:23:24,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:23:24,977 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:23:24,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:24 WrapperNode [2022-07-12 02:23:24,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:23:24,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:23:24,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:23:24,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:23:24,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:24" (1/1) ... [2022-07-12 02:23:24,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:24" (1/1) ... [2022-07-12 02:23:25,012 INFO L137 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 50 [2022-07-12 02:23:25,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:23:25,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:23:25,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:23:25,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:23:25,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:24" (1/1) ... [2022-07-12 02:23:25,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:24" (1/1) ... [2022-07-12 02:23:25,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:24" (1/1) ... [2022-07-12 02:23:25,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:24" (1/1) ... [2022-07-12 02:23:25,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:24" (1/1) ... [2022-07-12 02:23:25,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:24" (1/1) ... [2022-07-12 02:23:25,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:24" (1/1) ... [2022-07-12 02:23:25,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:23:25,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:23:25,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:23:25,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:23:25,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:24" (1/1) ... [2022-07-12 02:23:25,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:23:25,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:23:25,089 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) [2022-07-12 02:23:25,099 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 [2022-07-12 02:23:25,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:23:25,122 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2022-07-12 02:23:25,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2022-07-12 02:23:25,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 02:23:25,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:23:25,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:23:25,126 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2022-07-12 02:23:25,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2022-07-12 02:23:25,193 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:23:25,195 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:23:25,299 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:23:25,305 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:23:25,305 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:23:25,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:23:25 BoogieIcfgContainer [2022-07-12 02:23:25,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:23:25,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:23:25,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:23:25,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:23:25,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:23:24" (1/3) ... [2022-07-12 02:23:25,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316fa5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:23:25, skipping insertion in model container [2022-07-12 02:23:25,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:24" (2/3) ... [2022-07-12 02:23:25,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316fa5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:23:25, skipping insertion in model container [2022-07-12 02:23:25,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:23:25" (3/3) ... [2022-07-12 02:23:25,315 INFO L111 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2022-07-12 02:23:25,327 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:23:25,328 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:23:25,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:23:25,385 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@629408a9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5527876e [2022-07-12 02:23:25,385 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:23:25,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 02:23:25,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-12 02:23:25,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:23:25,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:23:25,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:23:25,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:23:25,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1224452808, now seen corresponding path program 1 times [2022-07-12 02:23:25,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:23:25,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242164066] [2022-07-12 02:23:25,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:23:25,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:23:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:23:25,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 02:23:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:23:25,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 02:23:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:23:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:23:25,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 02:23:25,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242164066] [2022-07-12 02:23:25,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242164066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:23:25,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:23:25,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 02:23:25,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339547929] [2022-07-12 02:23:25,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:23:25,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 02:23:25,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 02:23:25,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 02:23:25,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:23:25,696 INFO L87 Difference]: Start difference. First operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 02:23:25,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:23:25,716 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2022-07-12 02:23:25,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 02:23:25,719 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-07-12 02:23:25,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:23:25,731 INFO L225 Difference]: With dead ends: 55 [2022-07-12 02:23:25,732 INFO L226 Difference]: Without dead ends: 25 [2022-07-12 02:23:25,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:23:25,742 INFO L413 NwaCegarLoop]: 32 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, 32 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 [2022-07-12 02:23:25,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 02:23:25,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-12 02:23:25,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-12 02:23:25,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 02:23:25,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-07-12 02:23:25,789 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 20 [2022-07-12 02:23:25,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:23:25,789 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-07-12 02:23:25,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 02:23:25,790 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-07-12 02:23:25,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-12 02:23:25,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:23:25,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:23:25,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 02:23:25,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:23:25,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:23:25,795 INFO L85 PathProgramCache]: Analyzing trace with hash -769691898, now seen corresponding path program 1 times [2022-07-12 02:23:25,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:23:25,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081354135] [2022-07-12 02:23:25,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:23:25,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:23:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:23:25,827 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 02:23:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:23:25,875 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 02:23:25,876 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 02:23:25,878 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 02:23:25,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 02:23:25,884 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 02:23:25,888 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 02:23:25,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 02:23:25 BoogieIcfgContainer [2022-07-12 02:23:25,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 02:23:25,927 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 02:23:25,927 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 02:23:25,928 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 02:23:25,928 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:23:25" (3/4) ... [2022-07-12 02:23:25,931 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 02:23:25,931 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 02:23:25,933 INFO L158 Benchmark]: Toolchain (without parser) took 1140.11ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 51.9MB in the beginning and 85.7MB in the end (delta: -33.9MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2022-07-12 02:23:25,933 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:23:25,936 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.32ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 51.6MB in the beginning and 104.2MB in the end (delta: -52.5MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2022-07-12 02:23:25,937 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.52ms. Allocated memory is still 125.8MB. Free memory was 104.1MB in the beginning and 102.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:23:25,940 INFO L158 Benchmark]: Boogie Preprocessor took 31.75ms. Allocated memory is still 125.8MB. Free memory was 102.6MB in the beginning and 104.6MB in the end (delta: -2.1MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2022-07-12 02:23:25,941 INFO L158 Benchmark]: RCFGBuilder took 261.35ms. Allocated memory is still 125.8MB. Free memory was 104.6MB in the beginning and 95.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:23:25,941 INFO L158 Benchmark]: TraceAbstraction took 617.70ms. Allocated memory is still 125.8MB. Free memory was 94.1MB in the beginning and 85.7MB in the end (delta: 8.4MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2022-07-12 02:23:25,942 INFO L158 Benchmark]: Witness Printer took 4.35ms. Allocated memory is still 125.8MB. Free memory is still 85.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:23:25,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.32ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 51.6MB in the beginning and 104.2MB in the end (delta: -52.5MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.52ms. Allocated memory is still 125.8MB. Free memory was 104.1MB in the beginning and 102.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.75ms. Allocated memory is still 125.8MB. Free memory was 102.6MB in the beginning and 104.6MB in the end (delta: -2.1MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. * RCFGBuilder took 261.35ms. Allocated memory is still 125.8MB. Free memory was 104.6MB in the beginning and 95.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 617.70ms. Allocated memory is still 125.8MB. Free memory was 94.1MB in the beginning and 85.7MB in the end (delta: 8.4MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Witness Printer took 4.35ms. Allocated memory is still 125.8MB. Free memory is still 85.7MB. 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: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 54, overapproximation of someUnaryDOUBLEoperation at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35. Possible FailurePath: [L20] const double Pi=3.141592653589793238; VAL [Pi=1570796326794896619/500000000000000000] [L47] double a, r; [L49] a = __VERIFIER_nondet_double() [L50] CALL assume_abort_if_not(a >= -1.79e308 && a <= 1.79e308) [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, Pi=1570796326794896619/500000000000000000] [L50] RET assume_abort_if_not(a >= -1.79e308 && a <= 1.79e308) [L52] CALL, EXPR ARCTAN(a) [L41] COND TRUE x < 0 VAL [\old(x)=51, Pi=1570796326794896619/500000000000000000, x=51] [L41] CALL, EXPR ARCTAN_POS(-x) VAL [Pi=1570796326794896619/500000000000000000] [L35] COND TRUE x > 1. VAL [\old(x)=54, Pi=1570796326794896619/500000000000000000, x=54] [L35] CALL, EXPR ARCTAN_0_1(1. / x) VAL [Pi=1570796326794896619/500000000000000000] [L30] CALL, EXPR PADE_2_2(x) [L24] double x_2 = x*x; [L25] return 1. - x_2 / (3. + 9./5.*x_2); VAL [\old(x)=52, Pi=1570796326794896619/500000000000000000, x=52] [L30] RET, EXPR PADE_2_2(x) [L30] return x*PADE_2_2(x); [L35] RET, EXPR ARCTAN_0_1(1. / x) VAL [\old(x)=54, ARCTAN_0_1(1. / x)=49, Pi=1570796326794896619/500000000000000000, x=54] [L35] return Pi / 2. - ARCTAN_0_1(1. / x); [L41] RET, EXPR ARCTAN_POS(-x) VAL [\old(x)=51, ARCTAN_POS(-x)=50, Pi=1570796326794896619/500000000000000000, x=51] [L41] return -ARCTAN_POS(-x); [L52] RET, EXPR ARCTAN(a) [L52] r = ARCTAN(a) [L54] CALL __VERIFIER_assert(r >= -1.571 && r <= 1.571) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, Pi=1570796326794896619/500000000000000000] [L17] reach_error() VAL [\old(cond)=0, cond=0, Pi=1570796326794896619/500000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 32 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, 32 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 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 [2022-07-12 02:23:25,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/arctan_Pade.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:23:27,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:23:27,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:23:27,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:23:27,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:23:27,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:23:27,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:23:27,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:23:27,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:23:27,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:23:27,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:23:27,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:23:27,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:23:27,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:23:27,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:23:27,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:23:27,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:23:27,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:23:27,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:23:27,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:23:27,980 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:23:27,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:23:27,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:23:27,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:23:27,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:23:27,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:23:27,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:23:27,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:23:27,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:23:27,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:23:27,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:23:27,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:23:27,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:23:27,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:23:27,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:23:27,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:23:27,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:23:28,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:23:28,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:23:28,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:23:28,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:23:28,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:23:28,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 02:23:28,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:23:28,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:23:28,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:23:28,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:23:28,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:23:28,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:23:28,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:23:28,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:23:28,045 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:23:28,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:23:28,046 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:23:28,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:23:28,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:23:28,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:23:28,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:23:28,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:23:28,047 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 02:23:28,047 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 02:23:28,048 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 02:23:28,048 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:23:28,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:23:28,048 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:23:28,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:23:28,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:23:28,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:23:28,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:23:28,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:23:28,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:23:28,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:23:28,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:23:28,050 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 02:23:28,050 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 02:23:28,050 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:23:28,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:23:28,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:23:28,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 02:23:28,051 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 [2022-07-12 02:23:28,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:23:28,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:23:28,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:23:28,399 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:23:28,403 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:23:28,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/arctan_Pade.c [2022-07-12 02:23:28,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caef03c28/3a65fadc24504633883ec7c6b2f47458/FLAG32d1a1a44 [2022-07-12 02:23:28,920 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:23:28,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/arctan_Pade.c [2022-07-12 02:23:28,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caef03c28/3a65fadc24504633883ec7c6b2f47458/FLAG32d1a1a44 [2022-07-12 02:23:29,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caef03c28/3a65fadc24504633883ec7c6b2f47458 [2022-07-12 02:23:29,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:23:29,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:23:29,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:23:29,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:23:29,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:23:29,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:23:29" (1/1) ... [2022-07-12 02:23:29,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@99ec244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:29, skipping insertion in model container [2022-07-12 02:23:29,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:23:29" (1/1) ... [2022-07-12 02:23:29,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:23:29,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:23:29,527 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2022-07-12 02:23:29,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:23:29,565 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:23:29,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2022-07-12 02:23:29,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:23:29,611 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:23:29,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:29 WrapperNode [2022-07-12 02:23:29,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:23:29,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:23:29,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:23:29,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:23:29,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:29" (1/1) ... [2022-07-12 02:23:29,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:29" (1/1) ... [2022-07-12 02:23:29,664 INFO L137 Inliner]: procedures = 19, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 51 [2022-07-12 02:23:29,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:23:29,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:23:29,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:23:29,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:23:29,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:29" (1/1) ... [2022-07-12 02:23:29,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:29" (1/1) ... [2022-07-12 02:23:29,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:29" (1/1) ... [2022-07-12 02:23:29,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:29" (1/1) ... [2022-07-12 02:23:29,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:29" (1/1) ... [2022-07-12 02:23:29,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:29" (1/1) ... [2022-07-12 02:23:29,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:29" (1/1) ... [2022-07-12 02:23:29,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:23:29,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:23:29,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:23:29,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:23:29,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:29" (1/1) ... [2022-07-12 02:23:29,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:23:29,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:23:29,744 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) [2022-07-12 02:23:29,769 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 [2022-07-12 02:23:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:23:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 02:23:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2022-07-12 02:23:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2022-07-12 02:23:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:23:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:23:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2022-07-12 02:23:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2022-07-12 02:23:29,857 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:23:29,859 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:23:34,559 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:23:34,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:23:34,564 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:23:34,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:23:34 BoogieIcfgContainer [2022-07-12 02:23:34,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:23:34,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:23:34,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:23:34,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:23:34,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:23:29" (1/3) ... [2022-07-12 02:23:34,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76caf5b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:23:34, skipping insertion in model container [2022-07-12 02:23:34,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:23:29" (2/3) ... [2022-07-12 02:23:34,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76caf5b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:23:34, skipping insertion in model container [2022-07-12 02:23:34,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:23:34" (3/3) ... [2022-07-12 02:23:34,574 INFO L111 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2022-07-12 02:23:34,586 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:23:34,587 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:23:34,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:23:34,632 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@33de5c3a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@534f0c70 [2022-07-12 02:23:34,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:23:34,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 02:23:34,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-12 02:23:34,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:23:34,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:23:34,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:23:34,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:23:34,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1224452808, now seen corresponding path program 1 times [2022-07-12 02:23:34,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:23:34,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80114150] [2022-07-12 02:23:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:23:34,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:23:34,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:23:34,679 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) [2022-07-12 02:23:34,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 02:23:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:23:36,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 02:23:36,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:23:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:23:36,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:23:36,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:23:36,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80114150] [2022-07-12 02:23:36,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80114150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:23:36,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:23:36,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 02:23:36,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44187886] [2022-07-12 02:23:36,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:23:36,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 02:23:36,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:23:36,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 02:23:36,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:23:36,771 INFO L87 Difference]: Start difference. First operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 02:23:36,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:23:36,791 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2022-07-12 02:23:36,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 02:23:36,793 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-07-12 02:23:36,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:23:36,799 INFO L225 Difference]: With dead ends: 55 [2022-07-12 02:23:36,800 INFO L226 Difference]: Without dead ends: 25 [2022-07-12 02:23:36,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:23:36,808 INFO L413 NwaCegarLoop]: 32 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, 32 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 [2022-07-12 02:23:36,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 02:23:36,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-12 02:23:36,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-12 02:23:36,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 02:23:36,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-07-12 02:23:36,847 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 20 [2022-07-12 02:23:36,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:23:36,848 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-07-12 02:23:36,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 02:23:36,848 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-07-12 02:23:36,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-12 02:23:36,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:23:36,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:23:36,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 02:23:37,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:23:37,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:23:37,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:23:37,069 INFO L85 PathProgramCache]: Analyzing trace with hash -769691898, now seen corresponding path program 1 times [2022-07-12 02:23:37,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:23:37,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483487528] [2022-07-12 02:23:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:23:37,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:23:37,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:23:37,075 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) [2022-07-12 02:23:37,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 02:23:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:23:48,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-12 02:23:48,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:23:59,369 WARN L233 SmtUtils]: Spent 5.00s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:24:04,416 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:24:11,347 WARN L833 $PredicateComparison]: unable to prove that (and (= c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0))) (= (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) (let ((.cse0 (fp.mul c_currentRoundingMode |c_ARCTAN_0_1_~x#1| |c_ARCTAN_0_1_~x#1|))) (fp.div c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse0))))) |c_ARCTAN_0_1_PADE_2_2_#res#1|) (= |c_ARCTAN_0_1_#in~x#1| |c_ARCTAN_0_1_~x#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-12 02:24:14,015 WARN L855 $PredicateComparison]: unable to prove that (and (= c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0))) (= (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) (let ((.cse0 (fp.mul c_currentRoundingMode |c_ARCTAN_0_1_~x#1| |c_ARCTAN_0_1_~x#1|))) (fp.div c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse0))))) |c_ARCTAN_0_1_PADE_2_2_#res#1|) (= |c_ARCTAN_0_1_#in~x#1| |c_ARCTAN_0_1_~x#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-12 02:24:19,256 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:24:29,158 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:24:31,494 WARN L833 $PredicateComparison]: unable to prove that (and (= c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0))) (= |c_ARCTAN_0_1_#res#1| (fp.mul c_currentRoundingMode |c_ARCTAN_0_1_#in~x#1| (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) (let ((.cse0 (fp.mul c_currentRoundingMode |c_ARCTAN_0_1_#in~x#1| |c_ARCTAN_0_1_#in~x#1|))) (fp.div c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse0))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-12 02:24:36,667 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:24:46,572 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:24:51,830 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:24:57,816 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:25:00,486 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((ARCTAN_POS_~x (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= |c_ARCTAN_POS_#t~ret5| (let ((.cse0 (fp.div c_currentRoundingMode .cse1 ARCTAN_POS_~x))) (fp.mul c_currentRoundingMode .cse0 (fp.sub c_currentRoundingMode .cse1 (let ((.cse2 (fp.mul c_currentRoundingMode .cse0 .cse0))) (fp.div c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse2)))))))) (fp.gt ARCTAN_POS_~x .cse1)))) (= c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-12 02:25:05,743 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:25:11,813 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:25:14,539 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((ARCTAN_POS_~x (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= |c_ARCTAN_POS_#res| (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 ARCTAN_POS_~x))) (fp.mul c_currentRoundingMode .cse0 (fp.sub c_currentRoundingMode .cse1 (let ((.cse2 (fp.mul c_currentRoundingMode .cse0 .cse0))) (fp.div c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse2))))))))) (fp.gt ARCTAN_POS_~x .cse1)))) (= c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-12 02:25:19,788 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:25:25,844 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:25:31,160 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:25:37,181 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:25:39,822 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((ARCTAN_POS_~x (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0)) ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 ARCTAN_POS_~x))) (fp.mul c_currentRoundingMode .cse0 (fp.sub c_currentRoundingMode .cse1 (let ((.cse2 (fp.mul c_currentRoundingMode .cse0 .cse0))) (fp.div c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse2)))))))) |c_ULTIMATE.start_ARCTAN_#t~ret7#1|) (fp.gt ARCTAN_POS_~x .cse1)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-12 02:25:45,102 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:25:51,169 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:25:53,837 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((ARCTAN_POS_~x (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.gt ARCTAN_POS_~x .cse0) (= (fp.neg (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0)) ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 ARCTAN_POS_~x))) (fp.mul c_currentRoundingMode .cse1 (fp.sub c_currentRoundingMode .cse0 (let ((.cse2 (fp.mul c_currentRoundingMode .cse1 .cse1))) (fp.div c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse2))))))))) |c_ULTIMATE.start_ARCTAN_#res#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-12 02:26:04,342 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:26:10,475 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:26:18,255 WARN L233 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:26:24,318 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:26:33,040 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:26:39,178 WARN L233 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:26:45,244 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 02:26:47,773 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-07-12 02:26:47,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2022-07-12 02:26:47,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:26:47,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483487528] [2022-07-12 02:26:47,781 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-12 02:26:47,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-12 02:26:47,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:26:47,982 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:824) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:768) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 44 more [2022-07-12 02:26:47,986 INFO L158 Benchmark]: Toolchain (without parser) took 198655.43ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.4MB in the beginning and 50.2MB in the end (delta: -14.8MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2022-07-12 02:26:47,986 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 38.6MB in the beginning and 38.6MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:26:47,986 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.13ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 24.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 02:26:47,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.15ms. Allocated memory is still 56.6MB. Free memory was 24.7MB in the beginning and 40.7MB in the end (delta: -16.0MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-07-12 02:26:47,988 INFO L158 Benchmark]: Boogie Preprocessor took 46.18ms. Allocated memory is still 56.6MB. Free memory was 40.7MB in the beginning and 39.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:26:47,989 INFO L158 Benchmark]: RCFGBuilder took 4854.05ms. Allocated memory is still 56.6MB. Free memory was 39.4MB in the beginning and 29.8MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 02:26:47,989 INFO L158 Benchmark]: TraceAbstraction took 193417.32ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 29.3MB in the beginning and 50.2MB in the end (delta: -20.9MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2022-07-12 02:26:47,993 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 38.6MB in the beginning and 38.6MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.13ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 24.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.15ms. Allocated memory is still 56.6MB. Free memory was 24.7MB in the beginning and 40.7MB in the end (delta: -16.0MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.18ms. Allocated memory is still 56.6MB. Free memory was 40.7MB in the beginning and 39.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 4854.05ms. Allocated memory is still 56.6MB. Free memory was 39.4MB in the beginning and 29.8MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 193417.32ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 29.3MB in the beginning and 50.2MB in the end (delta: -20.9MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")