/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/float_req_bl_1121a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:08:58,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:08:58,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:08:58,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:08:58,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:08:58,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:08:58,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:08:58,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:08:58,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:08:58,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:08:58,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:08:58,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:08:58,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:08:58,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:08:58,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:08:58,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:08:58,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:08:58,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:08:58,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:08:58,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:08:58,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:08:58,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:08:58,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:08:58,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:08:58,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:08:58,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:08:58,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:08:58,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:08:58,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:08:58,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:08:58,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:08:58,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:08:58,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:08:58,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:08:58,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:08:58,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:08:58,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:08:58,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:08:58,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:08:58,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:08:58,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:08:58,817 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 09:08:58,871 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:08:58,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:08:58,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:08:58,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:08:58,876 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:08:58,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:08:58,876 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:08:58,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:08:58,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:08:58,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:08:58,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:08:58,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:08:58,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:08:58,879 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:08:58,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:08:58,879 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:08:58,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:08:58,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:08:58,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:08:58,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:08:58,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:08:58,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:08:58,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:08:58,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:08:58,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:08:58,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:08:58,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:08:58,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:08:58,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:08:58,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:08:59,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:08:59,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:08:59,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:08:59,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:08:59,399 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:08:59,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2020-10-29 09:08:59,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a7991caa/2ef689f04a25423c95f83ae0800fdfb3/FLAGd92f42260 [2020-10-29 09:09:00,113 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:09:00,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2020-10-29 09:09:00,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a7991caa/2ef689f04a25423c95f83ae0800fdfb3/FLAGd92f42260 [2020-10-29 09:09:00,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a7991caa/2ef689f04a25423c95f83ae0800fdfb3 [2020-10-29 09:09:00,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:09:00,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:09:00,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:00,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:09:00,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:09:00,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:00" (1/1) ... [2020-10-29 09:09:00,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed4a7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:00, skipping insertion in model container [2020-10-29 09:09:00,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:00" (1/1) ... [2020-10-29 09:09:00,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:09:00,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:09:00,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:00,738 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:09:00,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:00,867 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:09:00,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:00 WrapperNode [2020-10-29 09:09:00,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:00,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:09:00,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:09:00,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:09:00,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:00" (1/1) ... [2020-10-29 09:09:00,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:00" (1/1) ... [2020-10-29 09:09:00,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:00" (1/1) ... [2020-10-29 09:09:00,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:00" (1/1) ... [2020-10-29 09:09:00,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:00" (1/1) ... [2020-10-29 09:09:00,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:00" (1/1) ... [2020-10-29 09:09:00,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:00" (1/1) ... [2020-10-29 09:09:00,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:09:00,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:09:00,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:09:00,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:09:01,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:00" (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 09:09:01,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:09:01,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:09:01,113 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:09:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-29 09:09:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-29 09:09:01,115 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:09:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:09:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:09:01,116 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:09:01,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:09:01,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:09:01,117 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-29 09:09:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:09:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:09:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:09:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:09:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:09:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-29 09:09:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:09:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:09:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:09:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-29 09:09:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:09:01,790 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:09:01,790 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-29 09:09:01,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:01 BoogieIcfgContainer [2020-10-29 09:09:01,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:09:01,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:09:01,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:09:01,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:09:01,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:09:00" (1/3) ... [2020-10-29 09:09:01,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32023fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:01, skipping insertion in model container [2020-10-29 09:09:01,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:00" (2/3) ... [2020-10-29 09:09:01,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32023fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:01, skipping insertion in model container [2020-10-29 09:09:01,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:01" (3/3) ... [2020-10-29 09:09:01,804 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2020-10-29 09:09:01,818 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:09:01,824 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:09:01,838 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:09:01,867 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:09:01,867 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:09:01,867 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:09:01,867 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:09:01,867 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:09:01,867 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:09:01,868 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:09:01,868 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:09:01,887 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-29 09:09:01,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:09:01,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:01,895 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] [2020-10-29 09:09:01,895 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:01,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:01,902 INFO L82 PathProgramCache]: Analyzing trace with hash 859309759, now seen corresponding path program 1 times [2020-10-29 09:09:01,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:01,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247864856] [2020-10-29 09:09:01,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:02,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:02,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:02,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:02,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:09:02,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:09:02,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-29 09:09:02,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:02,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:09:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:02,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:09:02,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:09:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:02,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:02,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:02,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:02,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:02,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 09:09:02,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:02,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:02,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:02,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:02,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:02,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:02,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:09:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:02,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:02,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:02,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:02,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:09:02,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:09:02,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:09:02,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:02,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 09:09:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:02,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:02,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:09:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:02,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:02,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:02,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:02,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:02,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:09:02,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:02,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:02,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:02,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:09:02,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:02,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:02,652 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 09:09:02,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247864856] [2020-10-29 09:09:02,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:09:02,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:09:02,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000018656] [2020-10-29 09:09:02,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:09:02,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:09:02,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:09:02,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:09:02,680 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2020-10-29 09:09:02,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:09:02,973 INFO L93 Difference]: Finished difference Result 107 states and 164 transitions. [2020-10-29 09:09:02,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:09:02,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-29 09:09:02,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:09:02,990 INFO L225 Difference]: With dead ends: 107 [2020-10-29 09:09:02,992 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 09:09:02,997 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 [2020-10-29 09:09:03,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 09:09:03,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-29 09:09:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 09:09:03,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2020-10-29 09:09:03,072 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 23 [2020-10-29 09:09:03,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:09:03,074 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2020-10-29 09:09:03,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:09:03,074 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2020-10-29 09:09:03,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:09:03,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:03,078 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] [2020-10-29 09:09:03,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:09:03,079 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:03,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:03,088 INFO L82 PathProgramCache]: Analyzing trace with hash 853024034, now seen corresponding path program 1 times [2020-10-29 09:09:03,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:03,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237867388] [2020-10-29 09:09:03,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:09:03,216 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:09:03,216 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:09:03,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:09:03,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:09:03 BoogieIcfgContainer [2020-10-29 09:09:03,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:09:03,249 INFO L168 Benchmark]: Toolchain (without parser) took 2811.34 ms. Allocated memory is still 155.2 MB. Free memory was 129.7 MB in the beginning and 130.7 MB in the end (delta: -968.2 kB). Peak memory consumption was 1.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:03,251 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 155.2 MB. Free memory was 127.8 MB in the beginning and 127.7 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:09:03,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.13 ms. Allocated memory is still 155.2 MB. Free memory was 129.1 MB in the beginning and 117.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:03,253 INFO L168 Benchmark]: Boogie Preprocessor took 124.03 ms. Allocated memory is still 155.2 MB. Free memory was 117.0 MB in the beginning and 115.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:03,254 INFO L168 Benchmark]: RCFGBuilder took 795.84 ms. Allocated memory is still 155.2 MB. Free memory was 114.9 MB in the beginning and 123.4 MB in the end (delta: -8.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:03,255 INFO L168 Benchmark]: TraceAbstraction took 1449.72 ms. Allocated memory is still 155.2 MB. Free memory was 123.4 MB in the beginning and 130.7 MB in the end (delta: -7.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:09:03,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 155.2 MB. Free memory was 127.8 MB in the beginning and 127.7 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 427.13 ms. Allocated memory is still 155.2 MB. Free memory was 129.1 MB in the beginning and 117.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 124.03 ms. Allocated memory is still 155.2 MB. Free memory was 117.0 MB in the beginning and 115.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 795.84 ms. Allocated memory is still 155.2 MB. Free memory was 114.9 MB in the beginning and 123.4 MB in the end (delta: -8.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1449.72 ms. Allocated memory is still 155.2 MB. Free memory was 123.4 MB in the beginning and 130.7 MB in the end (delta: -7.3 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 bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L118] float x = __VERIFIER_nondet_float(); [L119] float y = 0.0f; [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_1121a.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: 1.3s, 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, 0.5s 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...