./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 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/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 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:22:50,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:22:50,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:22:50,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:22:50,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:22:50,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:22:50,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:22:50,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:22:50,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:22:50,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:22:50,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:22:50,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:22:50,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:22:50,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:22:50,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:22:50,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:22:50,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:22:50,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:22:50,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:22:50,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:22:50,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:22:50,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:22:50,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:22:50,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:22:50,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:22:50,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:22:50,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:22:50,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:22:50,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:22:50,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:22:50,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:22:50,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:22:50,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:22:50,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:22:50,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:22:50,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:22:50,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:22:50,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:22:50,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:22:50,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:22:50,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:22:50,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:22:50,455 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:22:50,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:22:50,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:22:50,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:22:50,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:22:50,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:22:50,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:22:50,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:22:50,458 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:22:50,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:22:50,458 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:22:50,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:22:50,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:22:50,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:22:50,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:22:50,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:22:50,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:22:50,459 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:22:50,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:22:50,460 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:22:50,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:22:50,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:22:50,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:22:50,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:22:50,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:22:50,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:22:50,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:22:50,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:22:50,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:22:50,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:22:50,462 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:22:50,462 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:22:50,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:22:50,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:22:50,463 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 [2021-12-15 10:22:50,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:22:50,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:22:50,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:22:50,640 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:22:50,641 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:22:50,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/arctan_Pade.c [2021-12-15 10:22:50,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5b198eb8/5316e30b9e964703a847bb4b4b88579b/FLAG49aa876a1 [2021-12-15 10:22:51,080 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:22:51,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/arctan_Pade.c [2021-12-15 10:22:51,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5b198eb8/5316e30b9e964703a847bb4b4b88579b/FLAG49aa876a1 [2021-12-15 10:22:51,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5b198eb8/5316e30b9e964703a847bb4b4b88579b [2021-12-15 10:22:51,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:22:51,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:22:51,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:22:51,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:22:51,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:22:51,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:22:51" (1/1) ... [2021-12-15 10:22:51,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73462a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:51, skipping insertion in model container [2021-12-15 10:22:51,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:22:51" (1/1) ... [2021-12-15 10:22:51,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:22:51,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:22:51,280 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] [2021-12-15 10:22:51,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:22:51,295 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:22:51,302 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] [2021-12-15 10:22:51,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:22:51,316 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:22:51,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:51 WrapperNode [2021-12-15 10:22:51,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:22:51,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:22:51,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:22:51,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:22:51,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:51" (1/1) ... [2021-12-15 10:22:51,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:51" (1/1) ... [2021-12-15 10:22:51,342 INFO L137 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 50 [2021-12-15 10:22:51,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:22:51,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:22:51,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:22:51,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:22:51,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:51" (1/1) ... [2021-12-15 10:22:51,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:51" (1/1) ... [2021-12-15 10:22:51,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:51" (1/1) ... [2021-12-15 10:22:51,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:51" (1/1) ... [2021-12-15 10:22:51,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:51" (1/1) ... [2021-12-15 10:22:51,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:51" (1/1) ... [2021-12-15 10:22:51,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:51" (1/1) ... [2021-12-15 10:22:51,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:22:51,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:22:51,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:22:51,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:22:51,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:51" (1/1) ... [2021-12-15 10:22:51,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:22:51,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:22:51,406 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 10:22:51,413 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 10:22:51,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:22:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2021-12-15 10:22:51,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2021-12-15 10:22:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:22:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:22:51,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:22:51,440 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2021-12-15 10:22:51,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2021-12-15 10:22:51,484 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:22:51,485 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:22:51,573 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:22:51,577 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:22:51,578 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 10:22:51,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:22:51 BoogieIcfgContainer [2021-12-15 10:22:51,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:22:51,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:22:51,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:22:51,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:22:51,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:22:51" (1/3) ... [2021-12-15 10:22:51,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3d9266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:22:51, skipping insertion in model container [2021-12-15 10:22:51,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:51" (2/3) ... [2021-12-15 10:22:51,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3d9266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:22:51, skipping insertion in model container [2021-12-15 10:22:51,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:22:51" (3/3) ... [2021-12-15 10:22:51,601 INFO L111 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2021-12-15 10:22:51,604 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:22:51,609 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:22:51,653 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:22:51,657 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 10:22:51,658 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:22:51,668 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) [2021-12-15 10:22:51,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 10:22:51,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:22:51,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:22:51,673 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:22:51,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:22:51,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1224452808, now seen corresponding path program 1 times [2021-12-15 10:22:51,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:22:51,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969361322] [2021-12-15 10:22:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:22:51,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:22:51,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:22:51,727 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 10:22:51,734 INFO L158 Benchmark]: Toolchain (without parser) took 629.26ms. Allocated memory is still 102.8MB. Free memory was 72.9MB in the beginning and 55.4MB in the end (delta: 17.5MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2021-12-15 10:22:51,735 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory is still 59.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:22:51,735 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.59ms. Allocated memory is still 102.8MB. Free memory was 72.7MB in the beginning and 77.3MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:22:51,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.10ms. Allocated memory is still 102.8MB. Free memory was 77.3MB in the beginning and 75.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:22:51,737 INFO L158 Benchmark]: Boogie Preprocessor took 17.83ms. Allocated memory is still 102.8MB. Free memory was 75.7MB in the beginning and 74.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:22:51,738 INFO L158 Benchmark]: RCFGBuilder took 217.16ms. Allocated memory is still 102.8MB. Free memory was 74.6MB in the beginning and 65.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:22:51,738 INFO L158 Benchmark]: TraceAbstraction took 147.79ms. Allocated memory is still 102.8MB. Free memory was 64.8MB in the beginning and 55.4MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 10:22:51,740 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 102.8MB. Free memory is still 59.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.59ms. Allocated memory is still 102.8MB. Free memory was 72.7MB in the beginning and 77.3MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.10ms. Allocated memory is still 102.8MB. Free memory was 77.3MB in the beginning and 75.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.83ms. Allocated memory is still 102.8MB. Free memory was 75.7MB in the beginning and 74.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 217.16ms. Allocated memory is still 102.8MB. Free memory was 74.6MB in the beginning and 65.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 147.79ms. Allocated memory is still 102.8MB. Free memory was 64.8MB in the beginning and 55.4MB 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 10:22:51,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:22:53,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:22:53,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:22:53,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:22:53,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:22:53,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:22:53,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:22:53,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:22:53,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:22:53,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:22:53,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:22:53,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:22:53,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:22:53,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:22:53,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:22:53,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:22:53,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:22:53,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:22:53,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:22:53,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:22:53,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:22:53,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:22:53,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:22:53,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:22:53,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:22:53,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:22:53,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:22:53,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:22:53,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:22:53,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:22:53,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:22:53,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:22:53,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:22:53,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:22:53,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:22:53,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:22:53,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:22:53,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:22:53,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:22:53,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:22:53,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:22:53,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:22:53,721 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:22:53,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:22:53,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:22:53,722 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:22:53,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:22:53,723 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:22:53,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:22:53,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:22:53,725 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:22:53,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:22:53,725 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:22:53,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:22:53,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:22:53,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:22:53,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:22:53,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:22:53,726 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:22:53,726 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:22:53,727 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:22:53,727 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:22:53,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:22:53,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:22:53,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:22:53,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:22:53,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:22:53,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:22:53,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:22:53,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:22:53,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:22:53,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:22:53,728 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:22:53,728 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:22:53,729 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:22:53,729 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:22:53,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:22:53,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:22:53,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:22:53,730 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 [2021-12-15 10:22:53,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:22:53,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:22:53,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:22:53,977 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:22:53,977 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:22:53,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/arctan_Pade.c [2021-12-15 10:22:54,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ee4d6b5/8fae0d2239ac4e778ca82d7e501e7dad/FLAGf3fcf3116 [2021-12-15 10:22:54,332 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:22:54,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/arctan_Pade.c [2021-12-15 10:22:54,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ee4d6b5/8fae0d2239ac4e778ca82d7e501e7dad/FLAGf3fcf3116 [2021-12-15 10:22:54,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ee4d6b5/8fae0d2239ac4e778ca82d7e501e7dad [2021-12-15 10:22:54,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:22:54,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:22:54,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:22:54,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:22:54,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:22:54,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:22:54" (1/1) ... [2021-12-15 10:22:54,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b018a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:54, skipping insertion in model container [2021-12-15 10:22:54,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:22:54" (1/1) ... [2021-12-15 10:22:54,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:22:54,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:22:54,893 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] [2021-12-15 10:22:54,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:22:54,913 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:22:54,922 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] [2021-12-15 10:22:54,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:22:54,952 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:22:54,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:54 WrapperNode [2021-12-15 10:22:54,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:22:54,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:22:54,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:22:54,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:22:54,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:54" (1/1) ... [2021-12-15 10:22:55,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:54" (1/1) ... [2021-12-15 10:22:55,031 INFO L137 Inliner]: procedures = 19, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 51 [2021-12-15 10:22:55,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:22:55,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:22:55,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:22:55,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:22:55,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:54" (1/1) ... [2021-12-15 10:22:55,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:54" (1/1) ... [2021-12-15 10:22:55,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:54" (1/1) ... [2021-12-15 10:22:55,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:54" (1/1) ... [2021-12-15 10:22:55,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:54" (1/1) ... [2021-12-15 10:22:55,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:54" (1/1) ... [2021-12-15 10:22:55,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:54" (1/1) ... [2021-12-15 10:22:55,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:22:55,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:22:55,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:22:55,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:22:55,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:54" (1/1) ... [2021-12-15 10:22:55,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:22:55,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:22:55,088 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 10:22:55,104 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 10:22:55,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:22:55,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:22:55,129 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2021-12-15 10:22:55,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2021-12-15 10:22:55,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:22:55,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:22:55,130 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2021-12-15 10:22:55,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2021-12-15 10:22:55,182 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:22:55,183 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:22:59,329 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:22:59,334 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:22:59,335 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 10:22:59,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:22:59 BoogieIcfgContainer [2021-12-15 10:22:59,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:22:59,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:22:59,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:22:59,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:22:59,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:22:54" (1/3) ... [2021-12-15 10:22:59,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e39b4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:22:59, skipping insertion in model container [2021-12-15 10:22:59,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:22:54" (2/3) ... [2021-12-15 10:22:59,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e39b4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:22:59, skipping insertion in model container [2021-12-15 10:22:59,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:22:59" (3/3) ... [2021-12-15 10:22:59,342 INFO L111 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2021-12-15 10:22:59,355 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:22:59,355 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:22:59,404 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:22:59,410 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 10:22:59,411 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:22:59,433 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) [2021-12-15 10:22:59,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 10:22:59,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:22:59,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:22:59,444 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:22:59,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:22:59,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1224452808, now seen corresponding path program 1 times [2021-12-15 10:22:59,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:22:59,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641880797] [2021-12-15 10:22:59,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:22:59,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:22:59,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:22:59,473 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 10:22:59,474 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 10:22:59,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 10:22:59,706 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 10:22:59,706 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 10:22:59,711 INFO L158 Benchmark]: Toolchain (without parser) took 4940.19ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 38.0MB in the beginning and 50.3MB in the end (delta: -12.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:22:59,712 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:22:59,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.44ms. Allocated memory is still 58.7MB. Free memory was 37.9MB in the beginning and 27.2MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 10:22:59,714 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.49ms. Allocated memory is still 58.7MB. Free memory was 27.2MB in the beginning and 42.2MB in the end (delta: -15.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 10:22:59,714 INFO L158 Benchmark]: Boogie Preprocessor took 35.99ms. Allocated memory is still 58.7MB. Free memory was 42.2MB in the beginning and 41.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:22:59,715 INFO L158 Benchmark]: RCFGBuilder took 4267.11ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 31.3MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:22:59,716 INFO L158 Benchmark]: TraceAbstraction took 373.08ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 31.0MB in the beginning and 50.3MB in the end (delta: -19.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:22:59,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.44ms. Allocated memory is still 58.7MB. Free memory was 37.9MB in the beginning and 27.2MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.49ms. Allocated memory is still 58.7MB. Free memory was 27.2MB in the beginning and 42.2MB in the end (delta: -15.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.99ms. Allocated memory is still 58.7MB. Free memory was 42.2MB in the beginning and 41.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 4267.11ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 31.3MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 373.08ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 31.0MB in the beginning and 50.3MB in the end (delta: -19.3MB). 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 10:22:59,826 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