/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_0620a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:16:44,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:16:44,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:16:44,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:16:44,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:16:44,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:16:44,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:16:44,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:16:44,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:16:44,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:16:44,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:16:44,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:16:44,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:16:44,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:16:44,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:16:44,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:16:44,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:16:44,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:16:44,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:16:44,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:16:44,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:16:44,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:16:44,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:16:44,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:16:44,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:16:44,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:16:44,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:16:44,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:16:44,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:16:44,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:16:44,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:16:44,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:16:44,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:16:44,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:16:44,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:16:44,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:16:44,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:16:44,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:16:44,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:16:44,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:16:44,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:16:44,403 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 23:16:44,441 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:16:44,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:16:44,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:16:44,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:16:44,444 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:16:44,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:16:44,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:16:44,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:16:44,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:16:44,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:16:44,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:16:44,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:16:44,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:16:44,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:16:44,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:16:44,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:16:44,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:16:44,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:16:44,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:16:44,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:16:44,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:16:44,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:16:44,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:16:44,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:16:44,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:16:44,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:16:44,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:16:44,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:16:44,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:16:44,449 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 23:16:44,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:16:44,770 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:16:44,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:16:44,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:16:44,777 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:16:44,777 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0620a.c [2020-10-14 23:16:44,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68cf4c1c7/104fc0067048405280ab2bcefc26216b/FLAGdbd3d289c [2020-10-14 23:16:45,360 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:16:45,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0620a.c [2020-10-14 23:16:45,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68cf4c1c7/104fc0067048405280ab2bcefc26216b/FLAGdbd3d289c [2020-10-14 23:16:45,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68cf4c1c7/104fc0067048405280ab2bcefc26216b [2020-10-14 23:16:45,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:16:45,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:16:45,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:16:45,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:16:45,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:16:45,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:16:45" (1/1) ... [2020-10-14 23:16:45,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73532894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:45, skipping insertion in model container [2020-10-14 23:16:45,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:16:45" (1/1) ... [2020-10-14 23:16:45,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:16:45,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:16:45,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:16:45,946 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:16:46,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:16:46,120 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:16:46,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46 WrapperNode [2020-10-14 23:16:46,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:16:46,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:16:46,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:16:46,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:16:46,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (1/1) ... [2020-10-14 23:16:46,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (1/1) ... [2020-10-14 23:16:46,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (1/1) ... [2020-10-14 23:16:46,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (1/1) ... [2020-10-14 23:16:46,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (1/1) ... [2020-10-14 23:16:46,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (1/1) ... [2020-10-14 23:16:46,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (1/1) ... [2020-10-14 23:16:46,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:16:46,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:16:46,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:16:46,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:16:46,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (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 23:16:46,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:16:46,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:16:46,257 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-14 23:16:46,257 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-14 23:16:46,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-14 23:16:46,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:16:46,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:16:46,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 23:16:46,258 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-14 23:16:46,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:16:46,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:16:46,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:16:46,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:16:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:16:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:16:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-14 23:16:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-14 23:16:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:16:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:16:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 23:16:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:16:46,730 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:16:46,730 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-14 23:16:46,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:16:46 BoogieIcfgContainer [2020-10-14 23:16:46,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:16:46,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:16:46,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:16:46,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:16:46,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:16:45" (1/3) ... [2020-10-14 23:16:46,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7637c892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:16:46, skipping insertion in model container [2020-10-14 23:16:46,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (2/3) ... [2020-10-14 23:16:46,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7637c892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:16:46, skipping insertion in model container [2020-10-14 23:16:46,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:16:46" (3/3) ... [2020-10-14 23:16:46,743 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0620a.c [2020-10-14 23:16:46,754 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:16:46,762 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:16:46,777 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:16:46,800 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:16:46,800 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:16:46,800 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:16:46,801 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:16:46,801 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:16:46,801 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:16:46,801 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:16:46,801 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:16:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-14 23:16:46,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:16:46,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:46,828 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 23:16:46,829 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:46,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:46,834 INFO L82 PathProgramCache]: Analyzing trace with hash -559886589, now seen corresponding path program 1 times [2020-10-14 23:16:46,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:46,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955748122] [2020-10-14 23:16:46,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:47,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:47,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:47,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:47,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:16:47,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:16:47,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-14 23:16:47,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:47,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:16:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:47,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 23:16:47,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:47,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:47,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:47,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:47,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:47,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:16:47,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:47,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:47,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:47,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:47,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:47,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:47,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:16:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:47,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:47,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:47,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:47,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:16:47,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:16:47,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:16:47,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:47,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:47,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:47,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:16:47,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:47,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:47,533 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 23:16:47,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955748122] [2020-10-14 23:16:47,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:16:47,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:16:47,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899842029] [2020-10-14 23:16:47,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:16:47,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:47,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:16:47,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:16:47,564 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-10-14 23:16:47,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:47,856 INFO L93 Difference]: Finished difference Result 104 states and 150 transitions. [2020-10-14 23:16:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:16:47,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 23:16:47,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:47,871 INFO L225 Difference]: With dead ends: 104 [2020-10-14 23:16:47,871 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 23:16:47,875 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 23:16:47,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 23:16:47,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-14 23:16:47,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 23:16:47,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2020-10-14 23:16:47,930 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 19 [2020-10-14 23:16:47,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:47,931 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2020-10-14 23:16:47,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:16:47,931 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2020-10-14 23:16:47,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:16:47,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:47,933 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 23:16:47,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:16:47,934 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:47,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:47,934 INFO L82 PathProgramCache]: Analyzing trace with hash -792059424, now seen corresponding path program 1 times [2020-10-14 23:16:47,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:47,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579756629] [2020-10-14 23:16:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:16:47,978 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:16:47,979 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:16:47,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:16:48,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:16:48 BoogieIcfgContainer [2020-10-14 23:16:48,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:16:48,016 INFO L168 Benchmark]: Toolchain (without parser) took 2327.14 ms. Allocated memory was 145.2 MB in the beginning and 234.4 MB in the end (delta: 89.1 MB). Free memory was 101.6 MB in the beginning and 177.3 MB in the end (delta: -75.7 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:16:48,019 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 23:16:48,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.86 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 101.2 MB in the beginning and 178.1 MB in the end (delta: -76.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-10-14 23:16:48,021 INFO L168 Benchmark]: Boogie Preprocessor took 74.85 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 175.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-10-14 23:16:48,022 INFO L168 Benchmark]: RCFGBuilder took 538.83 ms. Allocated memory is still 201.9 MB. Free memory was 175.1 MB in the beginning and 146.9 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:16:48,032 INFO L168 Benchmark]: TraceAbstraction took 1276.29 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 146.9 MB in the beginning and 177.3 MB in the end (delta: -30.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:16:48,042 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 431.86 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 101.2 MB in the beginning and 178.1 MB in the end (delta: -76.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.85 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 175.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 538.83 ms. Allocated memory is still 201.9 MB. Free memory was 175.1 MB in the beginning and 146.9 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1276.29 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 146.9 MB in the beginning and 177.3 MB in the end (delta: -30.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 159]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 158, overapproximation of someUnaryDOUBLEoperation at line 154, overapproximation of bitwiseAnd at line 73. 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; [L154] double x = -0.0; [L155] CALL, EXPR atan_double(x) [L65] double w, s1, s2, z; [L66] __int32_t ix, hx, id; [L69] ieee_double_shape_type gh_u; [L70] gh_u.value = (x) [L71] EXPR gh_u.parts.msw [L71] (hx) = gh_u.parts.msw [L73] ix = hx & 0x7fffffff [L74] COND FALSE !(ix >= 0x44100000) [L88] COND TRUE ix < 0x3fdc0000 [L89] COND TRUE ix < 0x3e200000 [L90] COND TRUE huge_atan + x > one_atan [L91] return x; [L155] RET, EXPR atan_double(x) [L155] double res = atan_double(x); [L158] EXPR res == -0.0 && __signbit_double(res) == 1 [L158] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L159] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 8 SDslu, 56 SDs, 0 SdLazy, 64 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=56occurred 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, 0.5s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1350 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...