/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_1122a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:28:40,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:28:40,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:28:40,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:28:40,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:28:40,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:28:40,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:28:40,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:28:40,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:28:40,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:28:40,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:28:40,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:28:40,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:28:40,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:28:40,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:28:40,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:28:41,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:28:41,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:28:41,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:28:41,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:28:41,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:28:41,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:28:41,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:28:41,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:28:41,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:28:41,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:28:41,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:28:41,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:28:41,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:28:41,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:28:41,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:28:41,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:28:41,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:28:41,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:28:41,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:28:41,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:28:41,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:28:41,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:28:41,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:28:41,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:28:41,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:28:41,046 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 14:28:41,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:28:41,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:28:41,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:28:41,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:28:41,076 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:28:41,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:28:41,077 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:28:41,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:28:41,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:28:41,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:28:41,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:28:41,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:28:41,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:28:41,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:28:41,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:28:41,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:28:41,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:28:41,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:28:41,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:28:41,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:28:41,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:28:41,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:28:41,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:28:41,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:28:41,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:28:41,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:28:41,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:28:41,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:28:41,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:28:41,083 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:28:41,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:28:41,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:28:41,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:28:41,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:28:41,516 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:28:41,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1122a.c [2020-10-28 14:28:41,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb0c5adab/f6b3a484ef4f4f6dbec10639585b4435/FLAGa0f77fe21 [2020-10-28 14:28:42,339 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:28:42,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1122a.c [2020-10-28 14:28:42,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb0c5adab/f6b3a484ef4f4f6dbec10639585b4435/FLAGa0f77fe21 [2020-10-28 14:28:42,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb0c5adab/f6b3a484ef4f4f6dbec10639585b4435 [2020-10-28 14:28:42,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:28:42,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:28:42,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:42,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:28:42,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:28:42,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:42" (1/1) ... [2020-10-28 14:28:42,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a5d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:42, skipping insertion in model container [2020-10-28 14:28:42,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:42" (1/1) ... [2020-10-28 14:28:42,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:28:42,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:28:42,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:42,973 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:28:43,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:43,031 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:28:43,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43 WrapperNode [2020-10-28 14:28:43,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:43,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:28:43,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:28:43,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:28:43,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (1/1) ... [2020-10-28 14:28:43,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:28:43,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:28:43,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:28:43,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:28:43,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (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 14:28:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:28:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:28:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:28:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-28 14:28:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-28 14:28:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:28:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:28:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:28:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:28:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:28:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:28:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-28 14:28:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:28:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:28:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:28:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:28:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:28:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-28 14:28:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:28:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:28:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:28:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:28:43,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:28:43,914 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:28:43,915 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-28 14:28:43,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:43 BoogieIcfgContainer [2020-10-28 14:28:43,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:28:43,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:28:43,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:28:43,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:28:43,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:28:42" (1/3) ... [2020-10-28 14:28:43,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28500186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:43, skipping insertion in model container [2020-10-28 14:28:43,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:43" (2/3) ... [2020-10-28 14:28:43,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28500186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:43, skipping insertion in model container [2020-10-28 14:28:43,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:43" (3/3) ... [2020-10-28 14:28:43,940 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122a.c [2020-10-28 14:28:43,957 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:28:43,963 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:28:43,982 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:28:44,035 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:28:44,035 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:28:44,035 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:28:44,035 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:28:44,036 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:28:44,036 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:28:44,036 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:28:44,036 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:28:44,064 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-28 14:28:44,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:28:44,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:44,076 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 14:28:44,076 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:44,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:44,092 INFO L82 PathProgramCache]: Analyzing trace with hash 859309759, now seen corresponding path program 1 times [2020-10-28 14:28:44,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:44,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052958337] [2020-10-28 14:28:44,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:44,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:44,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:28:44,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:44,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-28 14:28:44,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:44,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:44,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:44,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 14:28:44,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:44,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:28:44,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:28:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:44,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:44,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:44,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:44,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:28:44,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:44,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:44,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:28:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:44,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:44,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:28:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:44,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:44,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:28:44,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:44,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 14:28:44,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:44,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:44,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:44,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 14:28:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:44,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:28:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:44,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:44,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:44,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:44,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:28:44,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:44,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:44,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:44,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:28:44,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:44,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:44,962 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 14:28:44,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052958337] [2020-10-28 14:28:44,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:28:44,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:28:44,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940516990] [2020-10-28 14:28:44,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:28:44,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:28:44,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:28:44,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:28:44,990 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2020-10-28 14:28:45,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:28:45,300 INFO L93 Difference]: Finished difference Result 107 states and 164 transitions. [2020-10-28 14:28:45,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:28:45,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-28 14:28:45,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:28:45,312 INFO L225 Difference]: With dead ends: 107 [2020-10-28 14:28:45,312 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 14:28:45,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 14:28:45,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 14:28:45,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-28 14:28:45,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 14:28:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2020-10-28 14:28:45,368 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 23 [2020-10-28 14:28:45,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:28:45,368 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2020-10-28 14:28:45,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:28:45,369 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2020-10-28 14:28:45,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:28:45,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:45,370 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] [2020-10-28 14:28:45,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:28:45,371 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:45,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:45,371 INFO L82 PathProgramCache]: Analyzing trace with hash 853024034, now seen corresponding path program 1 times [2020-10-28 14:28:45,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:45,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191652312] [2020-10-28 14:28:45,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:28:45,450 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:28:45,451 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:28:45,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:28:45,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:28:45 BoogieIcfgContainer [2020-10-28 14:28:45,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:28:45,488 INFO L168 Benchmark]: Toolchain (without parser) took 2798.56 ms. Allocated memory is still 154.1 MB. Free memory was 129.0 MB in the beginning and 92.3 MB in the end (delta: 36.7 MB). Peak memory consumption was 38.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:45,488 INFO L168 Benchmark]: CDTParser took 1.69 ms. Allocated memory is still 154.1 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:45,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.55 ms. Allocated memory is still 154.1 MB. Free memory was 128.5 MB in the beginning and 116.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:45,493 INFO L168 Benchmark]: Boogie Preprocessor took 70.50 ms. Allocated memory is still 154.1 MB. Free memory was 116.9 MB in the beginning and 114.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:45,494 INFO L168 Benchmark]: RCFGBuilder took 817.47 ms. Allocated memory is still 154.1 MB. Free memory was 114.8 MB in the beginning and 88.6 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:45,494 INFO L168 Benchmark]: TraceAbstraction took 1554.53 ms. Allocated memory is still 154.1 MB. Free memory was 88.1 MB in the beginning and 92.3 MB in the end (delta: -4.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:45,507 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.69 ms. Allocated memory is still 154.1 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 333.55 ms. Allocated memory is still 154.1 MB. Free memory was 128.5 MB in the beginning and 116.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.50 ms. Allocated memory is still 154.1 MB. Free memory was 116.9 MB in the beginning and 114.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 817.47 ms. Allocated memory is still 154.1 MB. Free memory was 114.8 MB in the beginning and 88.6 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1554.53 ms. Allocated memory is still 154.1 MB. Free memory was 88.1 MB in the beginning and 92.3 MB in the end (delta: -4.2 MB). There was no memory consumed. 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 110, 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, }; [L119] float x = 1.0f / 0.0f; [L120] float y = __VERIFIER_nondet_float(); [L121] 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); [L121] RET, EXPR fmod_float(x, y) [L121] float res = fmod_float(x, y); [L124] CALL, EXPR isnan_float(res) [L110] return x != x; [L124] RET, EXPR isnan_float(res) [L124] COND TRUE !isnan_float(res) [L125] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1122a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 10 SDslu, 54 SDs, 0 SdLazy, 70 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1606 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...