/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0260.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:07:43,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:07:43,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:07:43,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:07:43,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:07:43,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:07:43,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:07:43,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:07:43,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:07:43,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:07:43,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:07:43,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:07:43,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:07:43,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:07:43,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:07:43,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:07:43,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:07:43,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:07:43,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:07:43,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:07:43,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:07:43,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:07:43,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:07:43,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:07:43,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:07:43,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:07:43,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:07:43,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:07:43,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:07:43,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:07:43,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:07:43,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:07:43,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:07:43,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:07:43,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:07:43,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:07:43,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:07:43,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:07:43,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:07:43,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:07:43,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:07:43,507 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 [2020-10-29 09:07:43,536 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:07:43,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:07:43,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:07:43,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:07:43,539 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:07:43,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:07:43,540 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:07:43,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:07:43,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:07:43,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:07:43,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:07:43,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:07:43,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:07:43,541 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:07:43,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:07:43,542 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:07:43,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:07:43,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:07:43,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:07:43,543 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:07:43,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:07:43,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:07:43,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:07:43,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:07:43,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:07:43,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:07:43,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:07:43,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:07:43,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:07:43,546 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:07:43,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:07:43,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:07:43,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:07:43,993 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:07:43,994 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:07:43,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0260.c [2020-10-29 09:07:44,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cce9a401/47d55e8fdc4e40b6986d72d24de8fcde/FLAGdaa784f76 [2020-10-29 09:07:44,852 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:07:44,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0260.c [2020-10-29 09:07:44,867 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cce9a401/47d55e8fdc4e40b6986d72d24de8fcde/FLAGdaa784f76 [2020-10-29 09:07:45,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cce9a401/47d55e8fdc4e40b6986d72d24de8fcde [2020-10-29 09:07:45,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:07:45,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:07:45,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:07:45,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:07:45,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:07:45,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:07:45" (1/1) ... [2020-10-29 09:07:45,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a48f637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:45, skipping insertion in model container [2020-10-29 09:07:45,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:07:45" (1/1) ... [2020-10-29 09:07:45,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:07:45,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:07:45,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:07:45,513 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:07:45,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:07:45,586 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:07:45,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:45 WrapperNode [2020-10-29 09:07:45,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:07:45,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:07:45,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:07:45,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:07:45,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:45" (1/1) ... [2020-10-29 09:07:45,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:45" (1/1) ... [2020-10-29 09:07:45,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:45" (1/1) ... [2020-10-29 09:07:45,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:45" (1/1) ... [2020-10-29 09:07:45,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:45" (1/1) ... [2020-10-29 09:07:45,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:45" (1/1) ... [2020-10-29 09:07:45,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:45" (1/1) ... [2020-10-29 09:07:45,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:07:45,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:07:45,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:07:45,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:07:45,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:45" (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 [2020-10-29 09:07:45,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:07:45,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:07:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:07:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-29 09:07:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-29 09:07:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-29 09:07:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asinf [2020-10-29 09:07:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:07:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:07:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:07:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:07:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:07:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:07:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-29 09:07:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-29 09:07:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:07:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:07:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:07:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:07:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:07:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-29 09:07:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asinf [2020-10-29 09:07:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:07:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:07:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:07:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:07:46,345 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:07:46,345 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-29 09:07:46,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:07:46 BoogieIcfgContainer [2020-10-29 09:07:46,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:07:46,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:07:46,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:07:46,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:07:46,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:07:45" (1/3) ... [2020-10-29 09:07:46,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ee0dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:07:46, skipping insertion in model container [2020-10-29 09:07:46,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:45" (2/3) ... [2020-10-29 09:07:46,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ee0dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:07:46, skipping insertion in model container [2020-10-29 09:07:46,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:07:46" (3/3) ... [2020-10-29 09:07:46,358 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0260.c [2020-10-29 09:07:46,373 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:07:46,379 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:07:46,393 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:07:46,425 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:07:46,425 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:07:46,425 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:07:46,426 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:07:46,426 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:07:46,426 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:07:46,426 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:07:46,426 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:07:46,449 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-10-29 09:07:46,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:07:46,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:46,458 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, 1] [2020-10-29 09:07:46,458 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:46,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:46,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1814094833, now seen corresponding path program 1 times [2020-10-29 09:07:46,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:46,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011447104] [2020-10-29 09:07:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:46,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:46,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:46,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:07:46,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:46,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-29 09:07:46,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:46,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:07:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:46,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:07:47,114 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-29 09:07:47,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:47,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:47,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:47,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:47,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 09:07:47,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:47,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:47,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:47,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:07:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:47,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:47,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:47,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:07:47,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:47,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:07:47,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:47,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:07:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:47,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:07:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:47,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:47,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:47,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:47,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:47,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:07:47,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:47,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:47,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:47,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:07:47,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:47,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:47,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011447104] [2020-10-29 09:07:47,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:07:47,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:07:47,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439549430] [2020-10-29 09:07:47,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:07:47,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:47,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:07:47,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:07:47,262 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2020-10-29 09:07:47,416 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 09:07:47,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:47,747 INFO L93 Difference]: Finished difference Result 149 states and 220 transitions. [2020-10-29 09:07:47,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:07:47,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-29 09:07:47,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:47,759 INFO L225 Difference]: With dead ends: 149 [2020-10-29 09:07:47,760 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 09:07:47,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:07:47,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 09:07:47,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-29 09:07:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 09:07:47,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2020-10-29 09:07:47,818 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 22 [2020-10-29 09:07:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:47,818 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2020-10-29 09:07:47,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:07:47,819 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2020-10-29 09:07:47,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:07:47,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:47,820 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, 1, 1] [2020-10-29 09:07:47,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:07:47,821 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:47,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:47,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1000949009, now seen corresponding path program 1 times [2020-10-29 09:07:47,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:47,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485330505] [2020-10-29 09:07:47,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:07:47,903 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:07:47,903 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:07:47,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:07:47,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:07:47 BoogieIcfgContainer [2020-10-29 09:07:47,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:07:47,938 INFO L168 Benchmark]: Toolchain (without parser) took 2762.37 ms. Allocated memory is still 155.2 MB. Free memory was 131.0 MB in the beginning and 95.3 MB in the end (delta: 35.7 MB). Peak memory consumption was 36.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:47,939 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 155.2 MB. Free memory was 128.9 MB in the beginning and 128.8 MB in the end (delta: 79.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:07:47,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.69 ms. Allocated memory is still 155.2 MB. Free memory was 130.4 MB in the beginning and 117.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:47,942 INFO L168 Benchmark]: Boogie Preprocessor took 80.36 ms. Allocated memory is still 155.2 MB. Free memory was 117.0 MB in the beginning and 114.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:47,943 INFO L168 Benchmark]: RCFGBuilder took 678.92 ms. Allocated memory is still 155.2 MB. Free memory was 114.6 MB in the beginning and 116.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:47,945 INFO L168 Benchmark]: TraceAbstraction took 1584.32 ms. Allocated memory is still 155.2 MB. Free memory was 115.7 MB in the beginning and 95.3 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:47,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 155.2 MB. Free memory was 128.9 MB in the beginning and 128.8 MB in the end (delta: 79.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 401.69 ms. Allocated memory is still 155.2 MB. Free memory was 130.4 MB in the beginning and 117.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 80.36 ms. Allocated memory is still 155.2 MB. Free memory was 117.0 MB in the beginning and 114.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 678.92 ms. Allocated memory is still 155.2 MB. Free memory was 114.6 MB in the beginning and 116.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1584.32 ms. Allocated memory is still 155.2 MB. Free memory was 115.7 MB in the beginning and 95.3 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 15, overapproximation of someUnaryDOUBLEoperation at line 104, overapproximation of bitwiseAnd at line 118, overapproximation of someUnaryFLOAToperation at line 102, overapproximation of someBinaryArithmeticFLOAToperation at line 121. Possible FailurePath: [L17] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L100-L108] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; [L185] float x = 0.0f / 0.0f; [L186] CALL, EXPR __ieee754_asinf(x) [L111] float t, w, p, q, c, r, s; [L112] __int32_t hx, ix; [L114] ieee_float_shape_type gf_u; [L115] gf_u.value = (x) [L116] EXPR gf_u.word [L116] (hx) = gf_u.word [L118] ix = hx & 0x7fffffff [L119] COND TRUE ix == 0x3f800000 [L121] return x * pio2_hi_asin + x * pio2_lo_asin; [L186] RET, EXPR __ieee754_asinf(x) [L186] float res = __ieee754_asinf(x); [L189] CALL, EXPR isnan_float(res) [L15] return x != x; [L189] RET, EXPR isnan_float(res) [L189] COND TRUE !isnan_float(res) [L190] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0260.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 80 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: 90 SDtfs, 14 SDslu, 75 SDs, 0 SdLazy, 89 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred 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, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 2394 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...