/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_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:28:41,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:28:41,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:28:41,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:28:42,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:28:42,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:28:42,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:28:42,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:28:42,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:28:42,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:28:42,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:28:42,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:28:42,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:28:42,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:28:42,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:28:42,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:28:42,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:28:42,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:28:42,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:28:42,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:28:42,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:28:42,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:28:42,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:28:42,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:28:42,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:28:42,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:28:42,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:28:42,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:28:42,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:28:42,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:28:42,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:28:42,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:28:42,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:28:42,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:28:42,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:28:42,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:28:42,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:28:42,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:28:42,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:28:42,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:28:42,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:28:42,102 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 14:28:42,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:28:42,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:28:42,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:28:42,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:28:42,161 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:28:42,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:28:42,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:28:42,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:28:42,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:28:42,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:28:42,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:28:42,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:28:42,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:28:42,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:28:42,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:28:42,165 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:28:42,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:28:42,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:28:42,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:28:42,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:28:42,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:28:42,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:28:42,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:28:42,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:28:42,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:28:42,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:28:42,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:28:42,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:28:42,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:28:42,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:28:42,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:28:42,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:28:42,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:28:42,627 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:28:42,627 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:28:42,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131a.c [2020-10-28 14:28:42,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/356c779c6/f08b55b7b30d40148db8ed2daa3543a9/FLAGa021a8a99 [2020-10-28 14:28:43,469 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:28:43,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131a.c [2020-10-28 14:28:43,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/356c779c6/f08b55b7b30d40148db8ed2daa3543a9/FLAGa021a8a99 [2020-10-28 14:28:43,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/356c779c6/f08b55b7b30d40148db8ed2daa3543a9 [2020-10-28 14:28:43,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:28:43,830 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:28:43,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:43,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:28:43,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:28:43,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d288e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43, skipping insertion in model container [2020-10-28 14:28:43,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:28:43,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:28:44,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:44,109 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:28:44,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:44,172 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:28:44,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44 WrapperNode [2020-10-28 14:28:44,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:44,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:28:44,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:28:44,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:28:44,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (1/1) ... [2020-10-28 14:28:44,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:28:44,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:28:44,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:28:44,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:28:44,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (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 14:28:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:28:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:28:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:28:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-28 14:28:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-10-28 14:28:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:28:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:28:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:28:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:28:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:28:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:28:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-28 14:28:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:28:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:28:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:28:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:28:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:28:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-10-28 14:28:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:28:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:28:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:28:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:28:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:28:45,061 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:28:45,062 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-28 14:28:45,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:45 BoogieIcfgContainer [2020-10-28 14:28:45,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:28:45,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:28:45,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:28:45,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:28:45,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:28:43" (1/3) ... [2020-10-28 14:28:45,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a4deb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:45, skipping insertion in model container [2020-10-28 14:28:45,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:44" (2/3) ... [2020-10-28 14:28:45,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a4deb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:45, skipping insertion in model container [2020-10-28 14:28:45,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:45" (3/3) ... [2020-10-28 14:28:45,074 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131a.c [2020-10-28 14:28:45,087 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:28:45,093 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:28:45,108 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:28:45,140 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:28:45,140 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:28:45,141 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:28:45,141 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:28:45,141 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:28:45,141 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:28:45,141 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:28:45,142 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:28:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-28 14:28:45,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:28:45,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:45,169 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 14:28:45,170 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:45,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:45,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1031583415, now seen corresponding path program 1 times [2020-10-28 14:28:45,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:45,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714422617] [2020-10-28 14:28:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:45,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:45,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:45,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:45,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:28:45,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:28:45,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-28 14:28:45,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:45,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:45,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 14:28:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:45,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 14:28:45,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:28:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:45,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:45,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:45,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:45,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:45,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:28:45,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:45,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:28:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:45,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:28:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:45,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:45,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:45,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:45,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:28:45,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:45,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:28:45,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:45,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:45,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:45,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:28:45,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:45,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:45,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:28:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:45,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:45,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:45,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:45,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:28:45,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:45,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 14:28:45,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:45,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 14:28:45,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:45,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:46,009 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 14:28:46,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714422617] [2020-10-28 14:28:46,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:28:46,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:28:46,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789693715] [2020-10-28 14:28:46,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:28:46,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:28:46,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:28:46,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:28:46,041 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 4 states. [2020-10-28 14:28:46,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:28:46,448 INFO L93 Difference]: Finished difference Result 117 states and 181 transitions. [2020-10-28 14:28:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:28:46,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-28 14:28:46,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:28:46,461 INFO L225 Difference]: With dead ends: 117 [2020-10-28 14:28:46,461 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 14:28:46,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:28:46,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 14:28:46,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-28 14:28:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-28 14:28:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2020-10-28 14:28:46,518 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 26 [2020-10-28 14:28:46,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:28:46,519 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2020-10-28 14:28:46,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:28:46,519 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2020-10-28 14:28:46,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 14:28:46,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:46,521 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, 1, 1, 1] [2020-10-28 14:28:46,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:28:46,521 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:46,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:46,522 INFO L82 PathProgramCache]: Analyzing trace with hash -2101718248, now seen corresponding path program 1 times [2020-10-28 14:28:46,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:46,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381741364] [2020-10-28 14:28:46,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:28:46,576 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:28:46,576 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:28:46,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:28:46,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:28:46 BoogieIcfgContainer [2020-10-28 14:28:46,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:28:46,602 INFO L168 Benchmark]: Toolchain (without parser) took 2775.48 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 112.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:46,603 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 123.9 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:46,603 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.45 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 113.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:46,604 INFO L168 Benchmark]: Boogie Preprocessor took 59.66 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 110.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:46,605 INFO L168 Benchmark]: RCFGBuilder took 826.32 ms. Allocated memory is still 151.0 MB. Free memory was 110.8 MB in the beginning and 116.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:46,606 INFO L168 Benchmark]: TraceAbstraction took 1532.91 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 112.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 5.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:46,610 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 123.9 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 341.45 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 113.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.66 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 110.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 826.32 ms. Allocated memory is still 151.0 MB. Free memory was 110.8 MB in the beginning and 116.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1532.91 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 112.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 5.1 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 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = __VERIFIER_nondet_float(); [L129] float y = 1.0f / 0.0f; [L131] CALL isfinite_float(x) [L111] __int32_t ix; [L113] ieee_float_shape_type gf_u; [L114] gf_u.value = (x) [L115] EXPR gf_u.word [L115] (ix) = gf_u.word [L117] ix &= 0x7fffffff [L118] return (((ix) < 0x7f800000L)); [L131] RET isfinite_float(x) [L131] COND TRUE isfinite_float(x) [L133] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L133] RET, EXPR fmod_float(x, y) [L133] float res = fmod_float(x, y); [L136] COND TRUE res != x [L137] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1131a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 8 SDslu, 62 SDs, 0 SdLazy, 77 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred 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, 0.6s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 2200 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...