/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/double_req_bl_1072c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:07:18,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:07:18,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:07:18,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:07:18,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:07:18,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:07:18,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:07:18,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:07:18,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:07:18,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:07:18,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:07:18,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:07:18,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:07:18,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:07:18,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:07:18,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:07:18,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:07:18,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:07:18,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:07:18,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:07:18,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:07:18,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:07:18,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:07:18,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:07:18,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:07:18,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:07:18,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:07:18,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:07:18,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:07:18,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:07:18,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:07:18,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:07:18,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:07:18,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:07:18,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:07:18,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:07:18,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:07:18,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:07:18,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:07:18,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:07:18,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:07:18,880 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 [2020-10-29 09:07:18,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:07:18,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:07:18,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:07:18,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:07:18,910 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:07:18,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:07:18,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:07:18,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:07:18,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:07:18,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:07:18,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:07:18,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:07:18,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:07:18,912 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:07:18,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:07:18,912 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:07:18,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:07:18,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:07:18,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:07:18,913 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:07:18,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:07:18,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:07:18,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:07:18,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:07:18,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:07:18,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:07:18,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:07:18,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:07:18,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:07:18,915 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:07:19,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:07:19,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:07:19,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:07:19,341 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:07:19,342 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:07:19,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072c.c [2020-10-29 09:07:19,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e3f072be/2732c32e2ef14866873e234050e21feb/FLAGc1af608cc [2020-10-29 09:07:20,043 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:07:20,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1072c.c [2020-10-29 09:07:20,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e3f072be/2732c32e2ef14866873e234050e21feb/FLAGc1af608cc [2020-10-29 09:07:20,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e3f072be/2732c32e2ef14866873e234050e21feb [2020-10-29 09:07:20,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:07:20,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:07:20,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:07:20,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:07:20,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:07:20,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:07:20" (1/1) ... [2020-10-29 09:07:20,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@179a4352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:20, skipping insertion in model container [2020-10-29 09:07:20,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:07:20" (1/1) ... [2020-10-29 09:07:20,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:07:20,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:07:20,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:07:20,746 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:07:20,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:07:20,801 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:07:20,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:20 WrapperNode [2020-10-29 09:07:20,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:07:20,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:07:20,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:07:20,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:07:20,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:20" (1/1) ... [2020-10-29 09:07:20,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:20" (1/1) ... [2020-10-29 09:07:20,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:20" (1/1) ... [2020-10-29 09:07:20,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:20" (1/1) ... [2020-10-29 09:07:20,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:20" (1/1) ... [2020-10-29 09:07:20,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:20" (1/1) ... [2020-10-29 09:07:20,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:20" (1/1) ... [2020-10-29 09:07:20,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:07:20,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:07:20,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:07:20,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:07:20,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:20" (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 [2020-10-29 09:07:20,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:07:20,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:07:20,946 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:07:20,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-29 09:07:20,947 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-10-29 09:07:20,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-29 09:07:20,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:07:20,948 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:07:20,948 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:07:20,948 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:07:20,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:07:20,950 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-29 09:07:20,950 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-10-29 09:07:20,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:07:20,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:07:20,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:07:20,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:07:20,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:07:20,952 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-29 09:07:20,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:07:20,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:07:20,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:07:20,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:07:21,733 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:07:21,734 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-29 09:07:21,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:07:21 BoogieIcfgContainer [2020-10-29 09:07:21,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:07:21,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:07:21,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:07:21,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:07:21,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:07:20" (1/3) ... [2020-10-29 09:07:21,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddccb59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:07:21, skipping insertion in model container [2020-10-29 09:07:21,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:20" (2/3) ... [2020-10-29 09:07:21,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddccb59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:07:21, skipping insertion in model container [2020-10-29 09:07:21,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:07:21" (3/3) ... [2020-10-29 09:07:21,752 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072c.c [2020-10-29 09:07:21,766 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:07:21,771 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:07:21,786 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:07:21,833 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:07:21,833 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:07:21,834 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:07:21,834 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:07:21,835 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:07:21,835 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:07:21,835 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:07:21,835 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:07:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-10-29 09:07:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 09:07:21,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:21,869 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] [2020-10-29 09:07:21,869 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:21,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:21,878 INFO L82 PathProgramCache]: Analyzing trace with hash -2080445002, now seen corresponding path program 1 times [2020-10-29 09:07:21,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:21,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626595406] [2020-10-29 09:07:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:22,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:22,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:22,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 09:07:22,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 09:07:22,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:22,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:22,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:22,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:07:22,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:22,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:07:22,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:22,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:22,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:22,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:22,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:22,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:07:22,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:22,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:22,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:07:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:22,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:22,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:22,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:07:22,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:07:22,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:22,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:07:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:22,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626595406] [2020-10-29 09:07:22,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:07:22,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:07:22,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151946476] [2020-10-29 09:07:22,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:07:22,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:22,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:07:22,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:07:22,506 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 4 states. [2020-10-29 09:07:22,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:22,696 INFO L93 Difference]: Finished difference Result 79 states and 111 transitions. [2020-10-29 09:07:22,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:07:22,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-29 09:07:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:22,707 INFO L225 Difference]: With dead ends: 79 [2020-10-29 09:07:22,707 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 09:07:22,711 INFO L677 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 [2020-10-29 09:07:22,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 09:07:22,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-29 09:07:22,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 09:07:22,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-29 09:07:22,757 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 20 [2020-10-29 09:07:22,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:22,757 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-29 09:07:22,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:07:22,758 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-29 09:07:22,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 09:07:22,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:22,759 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] [2020-10-29 09:07:22,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:07:22,760 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:22,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:22,760 INFO L82 PathProgramCache]: Analyzing trace with hash 903181317, now seen corresponding path program 1 times [2020-10-29 09:07:22,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:22,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675817815] [2020-10-29 09:07:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:07:22,813 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:07:22,814 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:07:22,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:07:22,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:07:22 BoogieIcfgContainer [2020-10-29 09:07:22,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:07:22,840 INFO L168 Benchmark]: Toolchain (without parser) took 2390.92 ms. Allocated memory was 125.8 MB in the beginning and 164.6 MB in the end (delta: 38.8 MB). Free memory was 100.7 MB in the beginning and 132.4 MB in the end (delta: -31.7 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:22,841 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:07:22,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.45 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 89.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:22,842 INFO L168 Benchmark]: Boogie Preprocessor took 54.21 ms. Allocated memory is still 125.8 MB. Free memory was 89.3 MB in the beginning and 87.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:22,844 INFO L168 Benchmark]: RCFGBuilder took 878.74 ms. Allocated memory was 125.8 MB in the beginning and 164.6 MB in the end (delta: 38.8 MB). Free memory was 87.3 MB in the beginning and 139.3 MB in the end (delta: -52.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:22,844 INFO L168 Benchmark]: TraceAbstraction took 1094.94 ms. Allocated memory is still 164.6 MB. Free memory was 139.3 MB in the beginning and 132.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:22,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 346.45 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 89.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.21 ms. Allocated memory is still 125.8 MB. Free memory was 89.3 MB in the beginning and 87.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 878.74 ms. Allocated memory was 125.8 MB in the beginning and 164.6 MB in the end (delta: 38.8 MB). Free memory was 87.3 MB in the beginning and 139.3 MB in the end (delta: -52.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1094.94 ms. Allocated memory is still 164.6 MB. Free memory was 139.3 MB in the beginning and 132.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 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 someUnaryDOUBLEoperation at line 83, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of someBinaryDOUBLEComparisonOperation at line 87. Possible FailurePath: [L83] double x = -0.0; [L84] CALL, EXPR trunc_double(x) [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L84] RET, EXPR trunc_double(x) [L84] double res = trunc_double(x); [L87] EXPR res == -0.0 && __signbit_double(res) == 1 [L87] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L88] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1072c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 8 SDslu, 34 SDs, 0 SdLazy, 43 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1159 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...