/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:48:36,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:48:36,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:48:36,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:48:36,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:48:36,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:48:36,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:48:36,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:48:36,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:48:36,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:48:36,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:48:36,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:48:36,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:48:36,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:48:36,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:48:36,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:48:36,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:48:36,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:48:36,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:48:36,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:48:36,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:48:36,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:48:36,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:48:36,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:48:36,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:48:36,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:48:36,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:48:36,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:48:36,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:48:36,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:48:36,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:48:36,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:48:36,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:48:36,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:48:36,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:48:36,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:48:36,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:48:36,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:48:36,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:48:36,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:48:36,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:48:36,950 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:48:36,970 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:48:36,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:48:36,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:48:36,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:48:36,972 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:48:36,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:48:36,972 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:48:36,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:48:36,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:48:36,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:48:36,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:48:36,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:48:36,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:48:36,974 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:48:36,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:48:36,974 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:48:36,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:48:36,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:48:36,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:48:36,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:48:36,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:48:36,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:48:36,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:48:36,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:48:36,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:48:36,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:48:36,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:48:36,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:48:36,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:48:36,977 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:48:37,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:48:37,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:48:37,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:48:37,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:48:37,304 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:48:37,304 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-10-14 04:48:37,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57164d4bf/c26c75299f804c9bbb613133eccba116/FLAG402a8eae1 [2020-10-14 04:48:37,848 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:48:37,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-10-14 04:48:37,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57164d4bf/c26c75299f804c9bbb613133eccba116/FLAG402a8eae1 [2020-10-14 04:48:38,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57164d4bf/c26c75299f804c9bbb613133eccba116 [2020-10-14 04:48:38,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:48:38,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:48:38,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:48:38,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:48:38,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:48:38,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dceca50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38, skipping insertion in model container [2020-10-14 04:48:38,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:48:38,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:48:38,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:48:38,564 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:48:38,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:48:38,737 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:48:38,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38 WrapperNode [2020-10-14 04:48:38,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:48:38,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:48:38,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:48:38,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:48:38,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:48:38,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:48:38,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:48:38,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:48:38,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:48:38,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:48:38,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:48:38,857 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-14 04:48:38,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-14 04:48:38,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:48:38,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:48:38,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 04:48:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-14 04:48:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:48:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:48:38,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:48:38,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:48:38,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:48:38,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:48:38,860 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-14 04:48:38,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:48:38,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:48:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:48:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:48:39,323 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:48:39,324 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-14 04:48:39,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:39 BoogieIcfgContainer [2020-10-14 04:48:39,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:48:39,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:48:39,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:48:39,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:48:39,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:48:38" (1/3) ... [2020-10-14 04:48:39,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abeefdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:39, skipping insertion in model container [2020-10-14 04:48:39,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (2/3) ... [2020-10-14 04:48:39,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abeefdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:39, skipping insertion in model container [2020-10-14 04:48:39,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:39" (3/3) ... [2020-10-14 04:48:39,343 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-10-14 04:48:39,366 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:48:39,375 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:48:39,387 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:48:39,411 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:48:39,412 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:48:39,412 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:48:39,412 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:48:39,412 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:48:39,412 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:48:39,413 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:48:39,413 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:48:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-14 04:48:39,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 04:48:39,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:39,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:48:39,440 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:39,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:39,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-10-14 04:48:39,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:39,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159573367] [2020-10-14 04:48:39,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:39,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:39,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 04:48:39,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:48:39,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 04:48:39,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:39,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:39,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 04:48:39,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:39,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:48:39,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:48:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:39,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:39,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:39,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:39,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:48:39,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:39,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:39,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:39,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:39,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:39,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:39,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 04:48:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:39,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:39,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:48:39,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:48:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:48:39,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:39,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 04:48:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:39,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:48:39,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159573367] [2020-10-14 04:48:39,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:48:39,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:48:39,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651491331] [2020-10-14 04:48:39,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:48:39,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:48:40,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:48:40,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:48:40,016 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-10-14 04:48:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:40,320 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-10-14 04:48:40,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:48:40,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 04:48:40,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:40,355 INFO L225 Difference]: With dead ends: 116 [2020-10-14 04:48:40,355 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 04:48:40,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:48:40,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 04:48:40,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-14 04:48:40,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 04:48:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-10-14 04:48:40,400 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-10-14 04:48:40,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:40,401 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-10-14 04:48:40,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:48:40,401 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-10-14 04:48:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 04:48:40,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:40,402 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] [2020-10-14 04:48:40,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:48:40,403 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:40,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:40,404 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-10-14 04:48:40,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:40,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36022924] [2020-10-14 04:48:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:48:40,447 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:48:40,447 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:48:40,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:48:40,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:48:40 BoogieIcfgContainer [2020-10-14 04:48:40,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:48:40,472 INFO L168 Benchmark]: Toolchain (without parser) took 2196.19 ms. Allocated memory was 146.3 MB in the beginning and 235.9 MB in the end (delta: 89.7 MB). Free memory was 102.2 MB in the beginning and 196.3 MB in the end (delta: -94.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 04:48:40,472 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 04:48:40,473 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.42 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 102.0 MB in the beginning and 178.5 MB in the end (delta: -76.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:40,474 INFO L168 Benchmark]: Boogie Preprocessor took 53.13 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 176.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:40,475 INFO L168 Benchmark]: RCFGBuilder took 536.16 ms. Allocated memory is still 202.4 MB. Free memory was 176.5 MB in the beginning and 148.0 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:40,476 INFO L168 Benchmark]: TraceAbstraction took 1139.36 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 148.0 MB in the beginning and 196.3 MB in the end (delta: -48.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 04:48:40,480 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 462.42 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 102.0 MB in the beginning and 178.5 MB in the end (delta: -76.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.13 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 176.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 536.16 ms. Allocated memory is still 202.4 MB. Free memory was 176.5 MB in the beginning and 148.0 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1139.36 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 148.0 MB in the beginning and 196.3 MB in the end (delta: -48.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] EXPR res == 0.0f && __signbit_float(res) == 0 [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 14 SDslu, 61 SDs, 0 SdLazy, 80 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...