/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0660b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:16:50,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:16:50,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:16:50,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:16:50,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:16:50,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:16:50,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:16:50,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:16:50,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:16:50,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:16:50,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:16:50,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:16:50,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:16:50,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:16:50,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:16:50,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:16:50,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:16:50,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:16:50,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:16:50,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:16:50,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:16:50,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:16:50,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:16:50,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:16:50,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:16:50,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:16:50,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:16:50,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:16:50,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:16:50,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:16:50,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:16:50,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:16:50,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:16:50,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:16:50,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:16:50,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:16:50,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:16:50,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:16:50,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:16:50,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:16:50,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:16:50,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:16:50,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:16:50,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:16:50,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:16:50,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:16:50,530 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:16:50,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:16:50,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:16:50,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:16:50,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:16:50,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:16:50,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:16:50,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:16:50,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:16:50,532 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:16:50,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:16:50,532 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:16:50,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:16:50,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:16:50,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:16:50,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:16:50,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:16:50,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:16:50,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:16:50,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:16:50,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:16:50,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:16:50,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:16:50,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:16:50,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:16:50,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:16:50,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:16:50,845 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:16:50,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:16:50,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:16:50,852 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:16:50,852 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0660b.c [2020-10-14 23:16:50,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf4121329/007b7022836f4d80abd9b8a2f248c8f6/FLAGf28408695 [2020-10-14 23:16:51,409 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:16:51,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0660b.c [2020-10-14 23:16:51,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf4121329/007b7022836f4d80abd9b8a2f248c8f6/FLAGf28408695 [2020-10-14 23:16:51,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf4121329/007b7022836f4d80abd9b8a2f248c8f6 [2020-10-14 23:16:51,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:16:51,756 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:16:51,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:16:51,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:16:51,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:16:51,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:16:51" (1/1) ... [2020-10-14 23:16:51,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a39a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:51, skipping insertion in model container [2020-10-14 23:16:51,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:16:51" (1/1) ... [2020-10-14 23:16:51,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:16:51,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:16:52,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:16:52,166 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:16:52,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:16:52,254 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:16:52,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:52 WrapperNode [2020-10-14 23:16:52,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:16:52,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:16:52,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:16:52,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:16:52,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:52" (1/1) ... [2020-10-14 23:16:52,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:52" (1/1) ... [2020-10-14 23:16:52,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:52" (1/1) ... [2020-10-14 23:16:52,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:52" (1/1) ... [2020-10-14 23:16:52,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:52" (1/1) ... [2020-10-14 23:16:52,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:52" (1/1) ... [2020-10-14 23:16:52,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:52" (1/1) ... [2020-10-14 23:16:52,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:16:52,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:16:52,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:16:52,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:16:52,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:16:52,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:16:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:16:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-14 23:16:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-14 23:16:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-14 23:16:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:16:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:16:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 23:16:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-14 23:16:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:16:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:16:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:16:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:16:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:16:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:16:52,400 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-14 23:16:52,400 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-14 23:16:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:16:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:16:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 23:16:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:16:53,056 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:16:53,056 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-14 23:16:53,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:16:53 BoogieIcfgContainer [2020-10-14 23:16:53,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:16:53,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:16:53,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:16:53,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:16:53,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:16:51" (1/3) ... [2020-10-14 23:16:53,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26330d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:16:53, skipping insertion in model container [2020-10-14 23:16:53,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:52" (2/3) ... [2020-10-14 23:16:53,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26330d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:16:53, skipping insertion in model container [2020-10-14 23:16:53,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:16:53" (3/3) ... [2020-10-14 23:16:53,074 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0660b.c [2020-10-14 23:16:53,084 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:16:53,092 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:16:53,104 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:16:53,126 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:16:53,127 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:16:53,127 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:16:53,127 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:16:53,127 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:16:53,127 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:16:53,128 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:16:53,128 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:16:53,148 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-14 23:16:53,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:16:53,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:53,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:53,157 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:53,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:53,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1380022172, now seen corresponding path program 1 times [2020-10-14 23:16:53,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:53,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601578164] [2020-10-14 23:16:53,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:53,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:53,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:53,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:53,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:16:53,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:16:53,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 23:16:53,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:53,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:53,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:53,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:16:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:53,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 23:16:53,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:53,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:53,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:53,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:53,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:53,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:16:53,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:53,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:53,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:53,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:53,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:53,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-10-14 23:16:53,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 23:16:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:53,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:53,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:53,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:53,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:16:53,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:16:53,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:16:53,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:53,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:16:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:53,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:53,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601578164] [2020-10-14 23:16:53,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:16:53,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:16:53,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134130357] [2020-10-14 23:16:53,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:16:53,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:53,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:16:53,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:16:53,838 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-10-14 23:16:54,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:54,327 INFO L93 Difference]: Finished difference Result 200 states and 317 transitions. [2020-10-14 23:16:54,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:16:54,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 23:16:54,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:54,345 INFO L225 Difference]: With dead ends: 200 [2020-10-14 23:16:54,346 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 23:16:54,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:16:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 23:16:54,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-14 23:16:54,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-14 23:16:54,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 137 transitions. [2020-10-14 23:16:54,452 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 137 transitions. Word has length 19 [2020-10-14 23:16:54,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:54,454 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 137 transitions. [2020-10-14 23:16:54,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:16:54,454 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 137 transitions. [2020-10-14 23:16:54,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:16:54,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:54,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:54,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:16:54,461 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:54,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:54,462 INFO L82 PathProgramCache]: Analyzing trace with hash 959017453, now seen corresponding path program 1 times [2020-10-14 23:16:54,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:54,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398126103] [2020-10-14 23:16:54,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:16:54,547 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:16:54,547 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:16:54,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:16:54,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:16:54 BoogieIcfgContainer [2020-10-14 23:16:54,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:16:54,584 INFO L168 Benchmark]: Toolchain (without parser) took 2826.49 ms. Allocated memory was 143.1 MB in the beginning and 228.1 MB in the end (delta: 84.9 MB). Free memory was 99.2 MB in the beginning and 123.8 MB in the end (delta: -24.6 MB). Peak memory consumption was 60.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:16:54,586 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 143.1 MB. Free memory was 117.7 MB in the beginning and 117.3 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 23:16:54,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 498.59 ms. Allocated memory was 143.1 MB in the beginning and 199.2 MB in the end (delta: 56.1 MB). Free memory was 98.8 MB in the beginning and 173.3 MB in the end (delta: -74.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:16:54,588 INFO L168 Benchmark]: Boogie Preprocessor took 72.85 ms. Allocated memory is still 199.2 MB. Free memory was 173.3 MB in the beginning and 169.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:16:54,590 INFO L168 Benchmark]: RCFGBuilder took 733.43 ms. Allocated memory is still 199.2 MB. Free memory was 169.2 MB in the beginning and 126.4 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:16:54,598 INFO L168 Benchmark]: TraceAbstraction took 1516.44 ms. Allocated memory was 199.2 MB in the beginning and 228.1 MB in the end (delta: 28.8 MB). Free memory was 125.4 MB in the beginning and 123.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:16:54,601 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 143.1 MB. Free memory was 117.7 MB in the beginning and 117.3 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 498.59 ms. Allocated memory was 143.1 MB in the beginning and 199.2 MB in the end (delta: 56.1 MB). Free memory was 98.8 MB in the beginning and 173.3 MB in the end (delta: -74.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.85 ms. Allocated memory is still 199.2 MB. Free memory was 173.3 MB in the beginning and 169.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 733.43 ms. Allocated memory is still 199.2 MB. Free memory was 169.2 MB in the beginning and 126.4 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1516.44 ms. Allocated memory was 199.2 MB in the beginning and 228.1 MB in the end (delta: 28.8 MB). Free memory was 125.4 MB in the beginning and 123.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 259]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 52, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of someBinaryDOUBLEComparisonOperation at line 258. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L60-L62] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L250] double x = __VERIFIER_nondet_double(); [L251] double y = 0.0; [L253] COND TRUE x < 0.0 [L255] CALL, EXPR __ieee754_atan2(y, x) [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; [L255] RET, EXPR __ieee754_atan2(y, x) [L255] double res = __ieee754_atan2(y, x); [L258] COND TRUE res != pi [L259] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 139 SDtfs, 16 SDslu, 125 SDs, 0 SdLazy, 139 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1512 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...