./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_3_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_3_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:20:26,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:20:26,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:20:26,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:20:26,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:20:26,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:20:26,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:20:26,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:20:26,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:20:26,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:20:26,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:20:26,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:20:26,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:20:26,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:20:26,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:20:26,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:20:26,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:20:26,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:20:26,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:20:26,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:20:26,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:20:26,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:20:26,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:20:26,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:20:26,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:20:26,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:20:26,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:20:26,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:20:26,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:20:26,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:20:26,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:20:26,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:20:26,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:20:26,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:20:26,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:20:26,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:20:26,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:20:26,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:20:26,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:20:26,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:20:26,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:20:26,610 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:20:26,637 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:20:26,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:20:26,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:20:26,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:20:26,638 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:20:26,639 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:20:26,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:20:26,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:20:26,639 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:20:26,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:20:26,640 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:20:26,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:20:26,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:20:26,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:20:26,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:20:26,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:20:26,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:20:26,642 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:20:26,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:20:26,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:20:26,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:20:26,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:20:26,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:20:26,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:20:26,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:20:26,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:20:26,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:20:26,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:20:26,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:20:26,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:20:26,644 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:20:26,644 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:20:26,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:20:26,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:20:26,644 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 [2021-12-15 10:20:26,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:20:26,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:20:26,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:20:26,848 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:20:26,848 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:20:26,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2021-12-15 10:20:26,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6503c3e2/129e6b5dc71e4a01b206768a63d222c5/FLAG54a37f799 [2021-12-15 10:20:27,259 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:20:27,260 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2021-12-15 10:20:27,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6503c3e2/129e6b5dc71e4a01b206768a63d222c5/FLAG54a37f799 [2021-12-15 10:20:27,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6503c3e2/129e6b5dc71e4a01b206768a63d222c5 [2021-12-15 10:20:27,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:20:27,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:20:27,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:20:27,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:20:27,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:20:27,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:20:27" (1/1) ... [2021-12-15 10:20:27,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb37727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:27, skipping insertion in model container [2021-12-15 10:20:27,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:20:27" (1/1) ... [2021-12-15 10:20:27,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:20:27,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:20:27,428 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_2.i[1764,1777] [2021-12-15 10:20:27,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:20:27,436 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:20:27,451 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_2.i[1764,1777] [2021-12-15 10:20:27,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:20:27,460 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:20:27,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:27 WrapperNode [2021-12-15 10:20:27,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:20:27,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:20:27,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:20:27,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:20:27,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:27" (1/1) ... [2021-12-15 10:20:27,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:27" (1/1) ... [2021-12-15 10:20:27,481 INFO L137 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2021-12-15 10:20:27,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:20:27,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:20:27,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:20:27,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:20:27,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:27" (1/1) ... [2021-12-15 10:20:27,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:27" (1/1) ... [2021-12-15 10:20:27,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:27" (1/1) ... [2021-12-15 10:20:27,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:27" (1/1) ... [2021-12-15 10:20:27,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:27" (1/1) ... [2021-12-15 10:20:27,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:27" (1/1) ... [2021-12-15 10:20:27,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:27" (1/1) ... [2021-12-15 10:20:27,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:20:27,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:20:27,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:20:27,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:20:27,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:27" (1/1) ... [2021-12-15 10:20:27,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:20:27,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:20:27,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 10:20:27,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 10:20:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:20:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-15 10:20:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-15 10:20:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-15 10:20:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-15 10:20:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:20:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:20:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:20:27,591 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:20:27,592 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:20:27,651 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:20:27,655 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:20:27,655 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 10:20:27,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:20:27 BoogieIcfgContainer [2021-12-15 10:20:27,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:20:27,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:20:27,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:20:27,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:20:27,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:20:27" (1/3) ... [2021-12-15 10:20:27,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbaac45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:20:27, skipping insertion in model container [2021-12-15 10:20:27,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:27" (2/3) ... [2021-12-15 10:20:27,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbaac45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:20:27, skipping insertion in model container [2021-12-15 10:20:27,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:20:27" (3/3) ... [2021-12-15 10:20:27,663 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_2.i [2021-12-15 10:20:27,666 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:20:27,666 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:20:27,696 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:20:27,701 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 10:20:27,701 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:20:27,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-15 10:20:27,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-15 10:20:27,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:20:27,716 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:20:27,716 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:20:27,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:20:27,720 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2021-12-15 10:20:27,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:20:27,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487311033] [2021-12-15 10:20:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:20:27,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:20:27,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:20:27,763 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) 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) [2021-12-15 10:20:27,767 INFO L158 Benchmark]: Toolchain (without parser) took 490.62ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 51.8MB in the beginning and 53.9MB in the end (delta: -2.2MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2021-12-15 10:20:27,768 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 81.8MB. Free memory was 52.3MB in the beginning and 52.3MB in the end (delta: 26.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:20:27,768 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.85ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 51.5MB in the beginning and 75.5MB in the end (delta: -23.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:20:27,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.96ms. Allocated memory is still 98.6MB. Free memory was 75.5MB in the beginning and 73.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:20:27,770 INFO L158 Benchmark]: Boogie Preprocessor took 12.47ms. Allocated memory is still 98.6MB. Free memory was 73.9MB in the beginning and 73.4MB in the end (delta: 550.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:20:27,770 INFO L158 Benchmark]: RCFGBuilder took 161.39ms. Allocated memory is still 98.6MB. Free memory was 72.9MB in the beginning and 64.0MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:20:27,771 INFO L158 Benchmark]: TraceAbstraction took 107.88ms. Allocated memory is still 98.6MB. Free memory was 63.5MB in the beginning and 53.9MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 10:20:27,774 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 81.8MB. Free memory was 52.3MB in the beginning and 52.3MB in the end (delta: 26.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.85ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 51.5MB in the beginning and 75.5MB in the end (delta: -23.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.96ms. Allocated memory is still 98.6MB. Free memory was 75.5MB in the beginning and 73.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.47ms. Allocated memory is still 98.6MB. Free memory was 73.9MB in the beginning and 73.4MB in the end (delta: 550.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 161.39ms. Allocated memory is still 98.6MB. Free memory was 72.9MB in the beginning and 64.0MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 107.88ms. Allocated memory is still 98.6MB. Free memory was 63.5MB in the beginning and 53.9MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 10:20:27,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_3_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:20:29,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:20:29,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:20:29,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:20:29,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:20:29,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:20:29,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:20:29,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:20:29,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:20:29,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:20:29,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:20:29,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:20:29,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:20:29,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:20:29,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:20:29,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:20:29,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:20:29,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:20:29,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:20:29,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:20:29,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:20:29,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:20:29,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:20:29,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:20:29,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:20:29,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:20:29,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:20:29,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:20:29,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:20:29,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:20:29,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:20:29,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:20:29,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:20:29,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:20:29,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:20:29,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:20:29,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:20:29,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:20:29,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:20:29,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:20:29,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:20:29,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:20:29,600 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:20:29,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:20:29,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:20:29,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:20:29,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:20:29,602 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:20:29,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:20:29,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:20:29,603 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:20:29,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:20:29,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:20:29,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:20:29,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:20:29,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:20:29,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:20:29,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:20:29,605 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:20:29,605 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:20:29,605 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:20:29,605 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:20:29,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:20:29,605 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:20:29,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:20:29,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:20:29,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:20:29,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:20:29,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:20:29,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:20:29,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:20:29,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:20:29,607 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:20:29,607 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:20:29,607 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:20:29,607 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:20:29,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:20:29,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:20:29,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:20:29,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 [2021-12-15 10:20:29,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:20:29,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:20:29,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:20:29,874 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:20:29,875 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:20:29,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2021-12-15 10:20:29,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39b3ac2f9/b8846d50bac74588bd18fc9f6768e0e4/FLAG714435cb9 [2021-12-15 10:20:30,303 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:20:30,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2021-12-15 10:20:30,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39b3ac2f9/b8846d50bac74588bd18fc9f6768e0e4/FLAG714435cb9 [2021-12-15 10:20:30,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39b3ac2f9/b8846d50bac74588bd18fc9f6768e0e4 [2021-12-15 10:20:30,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:20:30,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:20:30,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:20:30,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:20:30,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:20:30,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:20:30" (1/1) ... [2021-12-15 10:20:30,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25798f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:30, skipping insertion in model container [2021-12-15 10:20:30,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:20:30" (1/1) ... [2021-12-15 10:20:30,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:20:30,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:20:30,847 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_2.i[1764,1777] [2021-12-15 10:20:30,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:20:30,867 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:20:30,894 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_2.i[1764,1777] [2021-12-15 10:20:30,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:20:30,915 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:20:30,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:30 WrapperNode [2021-12-15 10:20:30,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:20:30,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:20:30,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:20:30,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:20:30,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:30" (1/1) ... [2021-12-15 10:20:30,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:30" (1/1) ... [2021-12-15 10:20:30,946 INFO L137 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2021-12-15 10:20:30,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:20:30,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:20:30,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:20:30,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:20:30,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:30" (1/1) ... [2021-12-15 10:20:30,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:30" (1/1) ... [2021-12-15 10:20:30,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:30" (1/1) ... [2021-12-15 10:20:30,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:30" (1/1) ... [2021-12-15 10:20:30,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:30" (1/1) ... [2021-12-15 10:20:30,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:30" (1/1) ... [2021-12-15 10:20:30,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:30" (1/1) ... [2021-12-15 10:20:30,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:20:30,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:20:30,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:20:30,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:20:30,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:30" (1/1) ... [2021-12-15 10:20:30,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:20:30,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:20:31,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 10:20:31,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 10:20:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:20:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-15 10:20:31,030 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-15 10:20:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:20:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-15 10:20:31,031 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-15 10:20:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:20:31,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:20:31,087 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:20:31,088 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:20:41,162 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:20:41,166 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:20:41,167 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 10:20:41,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:20:41 BoogieIcfgContainer [2021-12-15 10:20:41,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:20:41,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:20:41,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:20:41,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:20:41,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:20:30" (1/3) ... [2021-12-15 10:20:41,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff63221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:20:41, skipping insertion in model container [2021-12-15 10:20:41,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:30" (2/3) ... [2021-12-15 10:20:41,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff63221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:20:41, skipping insertion in model container [2021-12-15 10:20:41,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:20:41" (3/3) ... [2021-12-15 10:20:41,174 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_2.i [2021-12-15 10:20:41,177 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:20:41,177 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:20:41,218 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:20:41,223 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 10:20:41,223 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:20:41,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-15 10:20:41,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-15 10:20:41,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:20:41,237 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:20:41,238 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:20:41,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:20:41,241 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2021-12-15 10:20:41,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:20:41,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798568659] [2021-12-15 10:20:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:20:41,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:20:41,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:20:41,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 10:20:41,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 10:20:41,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 10:20:41,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 10:20:41,473 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) 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:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) 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) [2021-12-15 10:20:41,476 INFO L158 Benchmark]: Toolchain (without parser) took 10744.89ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.8MB in the beginning and 47.0MB in the end (delta: -11.2MB). Peak memory consumption was 354.5kB. Max. memory is 16.1GB. [2021-12-15 10:20:41,477 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 39.0MB in the beginning and 39.0MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:20:41,477 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.83ms. Allocated memory is still 56.6MB. Free memory was 35.7MB in the beginning and 39.6MB in the end (delta: -3.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 10:20:41,477 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.27ms. Allocated memory is still 56.6MB. Free memory was 39.5MB in the beginning and 37.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:20:41,478 INFO L158 Benchmark]: Boogie Preprocessor took 28.36ms. Allocated memory is still 56.6MB. Free memory was 37.9MB in the beginning and 36.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:20:41,478 INFO L158 Benchmark]: RCFGBuilder took 10192.53ms. Allocated memory is still 56.6MB. Free memory was 36.6MB in the beginning and 27.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:20:41,478 INFO L158 Benchmark]: TraceAbstraction took 304.70ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 27.4MB in the beginning and 47.3MB in the end (delta: -19.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:20:41,480 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 39.0MB in the beginning and 39.0MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.83ms. Allocated memory is still 56.6MB. Free memory was 35.7MB in the beginning and 39.6MB in the end (delta: -3.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.27ms. Allocated memory is still 56.6MB. Free memory was 39.5MB in the beginning and 37.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.36ms. Allocated memory is still 56.6MB. Free memory was 37.9MB in the beginning and 36.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 10192.53ms. Allocated memory is still 56.6MB. Free memory was 36.6MB in the beginning and 27.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 304.70ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 27.4MB in the beginning and 47.3MB in the end (delta: -19.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 10:20:41,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable