/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_1381.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:28:54,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:28:54,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:28:54,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:28:54,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:28:54,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:28:54,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:28:54,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:28:54,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:28:54,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:28:54,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:28:54,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:28:54,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:28:54,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:28:54,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:28:54,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:28:54,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:28:54,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:28:54,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:28:54,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:28:54,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:28:54,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:28:54,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:28:54,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:28:54,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:28:54,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:28:54,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:28:54,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:28:54,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:28:54,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:28:54,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:28:54,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:28:54,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:28:54,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:28:54,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:28:54,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:28:54,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:28:54,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:28:54,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:28:54,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:28:54,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:28:54,895 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 [2020-10-28 14:28:54,928 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:28:54,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:28:54,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:28:54,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:28:54,933 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:28:54,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:28:54,934 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:28:54,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:28:54,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:28:54,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:28:54,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:28:54,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:28:54,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:28:54,936 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:28:54,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:28:54,937 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:28:54,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:28:54,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:28:54,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:28:54,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:28:54,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:28:54,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:28:54,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:28:54,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:28:54,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:28:54,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:28:54,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:28:54,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:28:54,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:28:54,961 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:28:55,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:28:55,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:28:55,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:28:55,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:28:55,449 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:28:55,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1381.c [2020-10-28 14:28:55,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff8c62bda/ee542bce129042c38959251f56a41e65/FLAG0c1b9485c [2020-10-28 14:28:56,155 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:28:56,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1381.c [2020-10-28 14:28:56,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff8c62bda/ee542bce129042c38959251f56a41e65/FLAG0c1b9485c [2020-10-28 14:28:56,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff8c62bda/ee542bce129042c38959251f56a41e65 [2020-10-28 14:28:56,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:28:56,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:28:56,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:56,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:28:56,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:28:56,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:56" (1/1) ... [2020-10-28 14:28:56,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd94cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:56, skipping insertion in model container [2020-10-28 14:28:56,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:56" (1/1) ... [2020-10-28 14:28:56,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:28:56,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:28:56,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:56,764 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:28:56,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:56,803 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:28:56,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:56 WrapperNode [2020-10-28 14:28:56,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:56,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:28:56,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:28:56,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:28:56,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:56" (1/1) ... [2020-10-28 14:28:56,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:56" (1/1) ... [2020-10-28 14:28:56,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:56" (1/1) ... [2020-10-28 14:28:56,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:56" (1/1) ... [2020-10-28 14:28:56,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:56" (1/1) ... [2020-10-28 14:28:56,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:56" (1/1) ... [2020-10-28 14:28:56,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:56" (1/1) ... [2020-10-28 14:28:56,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:28:56,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:28:56,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:28:56,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:28:56,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:56" (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 [2020-10-28 14:28:56,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:28:56,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:28:56,916 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:28:56,916 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2020-10-28 14:28:56,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-28 14:28:56,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:28:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:28:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:28:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:28:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:28:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:28:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2020-10-28 14:28:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:28:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:28:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:28:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:28:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:28:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-28 14:28:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:28:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:28:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:28:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:28:57,449 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:28:57,449 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-28 14:28:57,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:57 BoogieIcfgContainer [2020-10-28 14:28:57,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:28:57,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:28:57,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:28:57,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:28:57,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:28:56" (1/3) ... [2020-10-28 14:28:57,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b18ba83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:57, skipping insertion in model container [2020-10-28 14:28:57,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:56" (2/3) ... [2020-10-28 14:28:57,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b18ba83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:57, skipping insertion in model container [2020-10-28 14:28:57,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:57" (3/3) ... [2020-10-28 14:28:57,464 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2020-10-28 14:28:57,478 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:28:57,484 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:28:57,499 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:28:57,539 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:28:57,539 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:28:57,539 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:28:57,539 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:28:57,539 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:28:57,540 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:28:57,540 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:28:57,540 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:28:57,566 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-28 14:28:57,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:28:57,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:57,575 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] [2020-10-28 14:28:57,575 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:57,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:57,583 INFO L82 PathProgramCache]: Analyzing trace with hash 767192926, now seen corresponding path program 1 times [2020-10-28 14:28:57,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:57,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861956585] [2020-10-28 14:28:57,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:57,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:57,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:57,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:58,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:58,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:28:58,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:28:58,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-28 14:28:58,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:58,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:58,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:58,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:28:58,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:58,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:28:58,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:28:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:58,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:58,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:58,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:58,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:58,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:28:58,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:58,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:58,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:58,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:28:58,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:58,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:28:58,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:28:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:58,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:58,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:58,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:58,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:58,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:28:58,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:28:58,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:28:58,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:58,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 14:28:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:58,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:58,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:28:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:58,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:58,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:58,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:58,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:58,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:28:58,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:58,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:58,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:58,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:28:58,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:58,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:28:58,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861956585] [2020-10-28 14:28:58,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:28:58,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:28:58,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837601585] [2020-10-28 14:28:58,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:28:58,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:28:58,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:28:58,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:28:58,209 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-10-28 14:28:58,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:28:58,348 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2020-10-28 14:28:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:28:58,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-28 14:28:58,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:28:58,357 INFO L225 Difference]: With dead ends: 57 [2020-10-28 14:28:58,358 INFO L226 Difference]: Without dead ends: 27 [2020-10-28 14:28:58,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:28:58,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-28 14:28:58,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-28 14:28:58,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-28 14:28:58,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2020-10-28 14:28:58,400 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 23 [2020-10-28 14:28:58,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:28:58,400 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2020-10-28 14:28:58,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:28:58,401 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-10-28 14:28:58,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:28:58,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:58,402 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, 1, 1, 1] [2020-10-28 14:28:58,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:28:58,403 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:58,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:58,404 INFO L82 PathProgramCache]: Analyzing trace with hash -680788211, now seen corresponding path program 1 times [2020-10-28 14:28:58,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:58,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152592622] [2020-10-28 14:28:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:28:58,468 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:28:58,468 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:28:58,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:28:58,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:28:58 BoogieIcfgContainer [2020-10-28 14:28:58,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:28:58,502 INFO L168 Benchmark]: Toolchain (without parser) took 1958.85 ms. Allocated memory is still 158.3 MB. Free memory was 134.7 MB in the beginning and 87.0 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.9 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:58,504 INFO L168 Benchmark]: CDTParser took 1.53 ms. Allocated memory is still 158.3 MB. Free memory is still 134.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:58,505 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.74 ms. Allocated memory is still 158.3 MB. Free memory was 134.0 MB in the beginning and 124.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:58,507 INFO L168 Benchmark]: Boogie Preprocessor took 46.15 ms. Allocated memory is still 158.3 MB. Free memory was 124.2 MB in the beginning and 122.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:58,508 INFO L168 Benchmark]: RCFGBuilder took 599.28 ms. Allocated memory is still 158.3 MB. Free memory was 122.5 MB in the beginning and 106.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:58,509 INFO L168 Benchmark]: TraceAbstraction took 1042.72 ms. Allocated memory is still 158.3 MB. Free memory was 105.5 MB in the beginning and 87.0 MB in the end (delta: 18.5 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:58,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.53 ms. Allocated memory is still 158.3 MB. Free memory is still 134.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.74 ms. Allocated memory is still 158.3 MB. Free memory was 134.0 MB in the beginning and 124.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.15 ms. Allocated memory is still 158.3 MB. Free memory was 124.2 MB in the beginning and 122.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 599.28 ms. Allocated memory is still 158.3 MB. Free memory was 122.5 MB in the beginning and 106.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1042.72 ms. Allocated memory is still 158.3 MB. Free memory was 105.5 MB in the beginning and 87.0 MB in the end (delta: 18.5 MB). Peak memory consumption was 19.6 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 35, overapproximation of bitwiseOr at line 28, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L45] float x = 0.0f / 0.0f; [L46] float y = __VERIFIER_nondet_float(); [L47] CALL, EXPR copysign_float(x, y) [L15] __uint32_t ix, iy; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (ix) = gf_u.word [L22] ieee_float_shape_type gf_u; [L23] gf_u.value = (y) [L24] EXPR gf_u.word [L24] (iy) = gf_u.word [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = ((ix & 0x7fffffff) | (iy & 0x80000000)) [L29] EXPR sf_u.value [L29] (x) = sf_u.value [L31] return x; [L47] RET, EXPR copysign_float(x, y) [L47] float res = copysign_float(x, y); [L50] CALL, EXPR isnan_float(res) [L35] return x != x; [L50] RET, EXPR isnan_float(res) [L50] COND TRUE !isnan_float(res) [L51] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1381.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 10 SDslu, 17 SDs, 0 SdLazy, 25 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1408 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...