/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=NARROWEST --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/float_req_bl_0281.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:19:19,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:19:19,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:19:19,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:19:19,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:19:19,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:19:19,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:19:19,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:19:19,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:19:19,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:19:19,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:19:19,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:19:19,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:19:19,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:19:19,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:19:19,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:19:19,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:19:19,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:19:19,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:19:19,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:19:19,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:19:19,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:19:19,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:19:19,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:19:19,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:19:19,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:19:19,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:19:19,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:19:19,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:19:19,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:19:19,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:19:19,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:19:19,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:19:19,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:19:19,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:19:19,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:19:19,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:19:19,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:19:19,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:19:19,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:19:19,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:19:19,404 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 [2020-10-13 10:19:19,426 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:19:19,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:19:19,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:19:19,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:19:19,428 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:19:19,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:19:19,429 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:19:19,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:19:19,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:19:19,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:19:19,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:19:19,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:19:19,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:19:19,430 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:19:19,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:19:19,430 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:19:19,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:19:19,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:19:19,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:19:19,431 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:19:19,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:19:19,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:19:19,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:19:19,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:19:19,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:19:19,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:19:19,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:19:19,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:19:19,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:19:19,433 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:19:19,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:19:19,781 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:19:19,785 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:19:19,786 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:19:19,787 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:19:19,788 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0281.c [2020-10-13 10:19:19,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98e6e5743/43b143133a184db28d9c8b1874470ac5/FLAG4ffc74b75 [2020-10-13 10:19:20,376 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:19:20,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0281.c [2020-10-13 10:19:20,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98e6e5743/43b143133a184db28d9c8b1874470ac5/FLAG4ffc74b75 [2020-10-13 10:19:20,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98e6e5743/43b143133a184db28d9c8b1874470ac5 [2020-10-13 10:19:20,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:19:20,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:19:20,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:20,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:19:20,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:19:20,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:20" (1/1) ... [2020-10-13 10:19:20,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d15d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:20, skipping insertion in model container [2020-10-13 10:19:20,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:20" (1/1) ... [2020-10-13 10:19:20,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:19:20,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:19:21,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:21,011 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:19:21,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:21,178 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:19:21,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:21 WrapperNode [2020-10-13 10:19:21,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:21,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:19:21,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:19:21,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:19:21,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:21" (1/1) ... [2020-10-13 10:19:21,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:21" (1/1) ... [2020-10-13 10:19:21,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:21" (1/1) ... [2020-10-13 10:19:21,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:21" (1/1) ... [2020-10-13 10:19:21,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:21" (1/1) ... [2020-10-13 10:19:21,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:21" (1/1) ... [2020-10-13 10:19:21,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:21" (1/1) ... [2020-10-13 10:19:21,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:19:21,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:19:21,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:19:21,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:19:21,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:21" (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 [2020-10-13 10:19:21,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:19:21,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:19:21,306 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-13 10:19:21,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-13 10:19:21,306 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-13 10:19:21,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asinf [2020-10-13 10:19:21,307 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:19:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:19:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-13 10:19:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-13 10:19:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-13 10:19:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:19:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:19:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:19:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:19:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:19:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:19:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-13 10:19:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asinf [2020-10-13 10:19:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:19:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:19:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:19:21,859 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:19:21,860 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-13 10:19:21,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:21 BoogieIcfgContainer [2020-10-13 10:19:21,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:19:21,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:19:21,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:19:21,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:19:21,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:19:20" (1/3) ... [2020-10-13 10:19:21,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cd936b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:21, skipping insertion in model container [2020-10-13 10:19:21,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:21" (2/3) ... [2020-10-13 10:19:21,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cd936b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:21, skipping insertion in model container [2020-10-13 10:19:21,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:21" (3/3) ... [2020-10-13 10:19:21,888 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0281.c [2020-10-13 10:19:21,899 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:19:21,908 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:19:21,922 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:19:21,948 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:19:21,948 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:19:21,948 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:19:21,948 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:19:21,949 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:19:21,949 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:19:21,949 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:19:21,949 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:19:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-10-13 10:19:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 10:19:21,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:21,979 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] [2020-10-13 10:19:21,979 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:21,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:21,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1961299150, now seen corresponding path program 1 times [2020-10-13 10:19:21,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:21,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819581856] [2020-10-13 10:19:21,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:22,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:22,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:22,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 10:19:22,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:22,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-13 10:19:22,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:22,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:22,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:19:22,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:22,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:19:22,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:19:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:22,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:22,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:22,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:22,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:22,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:19:22,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:22,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:22,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:22,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:22,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 10:19:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:22,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:22,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:22,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:19:22,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:22,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:19:22,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:22,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:22,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:19:22,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:22,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:22,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:19:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:22,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:22,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:22,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:22,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:22,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:19:22,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:19:22,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:22,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:19:22,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819581856] [2020-10-13 10:19:22,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:19:22,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:19:22,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394040061] [2020-10-13 10:19:22,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:19:22,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:19:22,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:19:22,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:19:22,582 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 4 states. [2020-10-13 10:19:23,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:19:23,131 INFO L93 Difference]: Finished difference Result 150 states and 221 transitions. [2020-10-13 10:19:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:19:23,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-13 10:19:23,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:19:23,148 INFO L225 Difference]: With dead ends: 150 [2020-10-13 10:19:23,149 INFO L226 Difference]: Without dead ends: 73 [2020-10-13 10:19:23,156 INFO L675 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 [2020-10-13 10:19:23,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-13 10:19:23,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-13 10:19:23,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 10:19:23,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2020-10-13 10:19:23,238 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 22 [2020-10-13 10:19:23,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:19:23,245 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2020-10-13 10:19:23,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:19:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2020-10-13 10:19:23,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 10:19:23,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:23,248 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] [2020-10-13 10:19:23,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:19:23,249 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:23,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:23,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1590430122, now seen corresponding path program 1 times [2020-10-13 10:19:23,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:23,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298453563] [2020-10-13 10:19:23,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:19:23,333 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:19:23,333 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:19:23,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:19:23,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:19:23 BoogieIcfgContainer [2020-10-13 10:19:23,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:19:23,382 INFO L168 Benchmark]: Toolchain (without parser) took 2648.49 ms. Allocated memory was 141.6 MB in the beginning and 233.3 MB in the end (delta: 91.8 MB). Free memory was 104.5 MB in the beginning and 144.6 MB in the end (delta: -40.1 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:23,384 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:19:23,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.71 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 104.2 MB in the beginning and 180.3 MB in the end (delta: -76.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:23,387 INFO L168 Benchmark]: Boogie Preprocessor took 63.22 ms. Allocated memory is still 204.5 MB. Free memory was 180.3 MB in the beginning and 177.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:23,388 INFO L168 Benchmark]: RCFGBuilder took 624.95 ms. Allocated memory is still 204.5 MB. Free memory was 177.7 MB in the beginning and 144.8 MB in the end (delta: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:23,390 INFO L168 Benchmark]: TraceAbstraction took 1506.90 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 144.1 MB in the beginning and 144.6 MB in the end (delta: -473.0 kB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:23,400 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 444.71 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 104.2 MB in the beginning and 180.3 MB in the end (delta: -76.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.22 ms. Allocated memory is still 204.5 MB. Free memory was 180.3 MB in the beginning and 177.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 624.95 ms. Allocated memory is still 204.5 MB. Free memory was 177.7 MB in the beginning and 144.8 MB in the end (delta: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1506.90 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 144.1 MB in the beginning and 144.6 MB in the end (delta: -473.0 kB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 192]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of someUnaryDOUBLEoperation at line 102, overapproximation of bitwiseAnd at line 116, overapproximation of someUnaryFLOAToperation at line 100, overapproximation of someBinaryArithmeticFLOAToperation at line 119. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L98-L106] 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; [L184] float x = __VERIFIER_nondet_float(); [L186] COND TRUE x < -1.0f || x > 1.0f [L188] CALL, EXPR __ieee754_asinf(x) [L109] float t, w, p, q, c, r, s; [L110] __int32_t hx, ix; [L112] ieee_float_shape_type gf_u; [L113] gf_u.value = (x) [L114] EXPR gf_u.word [L114] (hx) = gf_u.word [L116] ix = hx & 0x7fffffff [L117] COND TRUE ix == 0x3f800000 [L119] return x * pio2_hi_asin + x * pio2_lo_asin; [L188] RET, EXPR __ieee754_asinf(x) [L188] float res = __ieee754_asinf(x); [L191] CALL, EXPR isnan_float(res) [L13] return x != x; [L191] RET, EXPR isnan_float(res) [L191] COND TRUE !isnan_float(res) [L192] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 78 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: 84 SDtfs, 86 SDslu, 5 SDs, 0 SdLazy, 94 SolverSat, 20 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=78occurred 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, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1953 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...