/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=SHALLOWEST --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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:04:06,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:04:06,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:04:06,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:04:06,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:04:06,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:04:06,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:04:06,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:04:06,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:04:06,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:04:06,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:04:06,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:04:06,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:04:06,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:04:06,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:04:06,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:04:06,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:04:06,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:04:06,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:04:06,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:04:06,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:04:06,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:04:06,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:04:06,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:04:06,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:04:06,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:04:06,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:04:06,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:04:06,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:04:06,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:04:06,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:04:06,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:04:06,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:04:06,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:04:06,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:04:06,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:04:06,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:04:06,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:04:06,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:04:06,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:04:06,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:04:06,909 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 [2020-10-27 01:04:06,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:04:06,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:04:06,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:04:06,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:04:06,966 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:04:06,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:04:06,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:04:06,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:04:06,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:04:06,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:04:06,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:04:06,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:04:06,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:04:06,970 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:04:06,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:04:06,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:04:06,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:04:06,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:04:06,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:04:06,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:04:06,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:04:06,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:04:06,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:04:06,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:04:06,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:04:06,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:04:06,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:04:06,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:04:06,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:04:06,974 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:04:07,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:04:07,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:04:07,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:04:07,477 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:04:07,478 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:04:07,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-10-27 01:04:07,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0191e18a4/a8285e2379504f7c81a3792479ce7fb6/FLAGbdcc029e1 [2020-10-27 01:04:08,227 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:04:08,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-10-27 01:04:08,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0191e18a4/a8285e2379504f7c81a3792479ce7fb6/FLAGbdcc029e1 [2020-10-27 01:04:08,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0191e18a4/a8285e2379504f7c81a3792479ce7fb6 [2020-10-27 01:04:08,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:04:08,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:04:08,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:08,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:04:08,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:04:08,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:08,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acaa6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08, skipping insertion in model container [2020-10-27 01:04:08,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:08,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:04:08,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:04:08,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:08,902 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:04:08,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:08,962 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:04:08,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08 WrapperNode [2020-10-27 01:04:08,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:08,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:04:08,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:04:08,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:04:08,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:08,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:08,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:08,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:09,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:09,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:09,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:09,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:04:09,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:04:09,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:04:09,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:04:09,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (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 [2020-10-27 01:04:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:04:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:04:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:04:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-27 01:04:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-10-27 01:04:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:04:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:04:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:04:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:04:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:04:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:04:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-27 01:04:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:04:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:04:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:04:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:04:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:04:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-10-27 01:04:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:04:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:04:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:04:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:04:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:04:09,717 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:04:09,717 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-27 01:04:09,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:09 BoogieIcfgContainer [2020-10-27 01:04:09,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:04:09,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:04:09,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:04:09,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:04:09,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:04:08" (1/3) ... [2020-10-27 01:04:09,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5fc021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:09, skipping insertion in model container [2020-10-27 01:04:09,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (2/3) ... [2020-10-27 01:04:09,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5fc021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:09, skipping insertion in model container [2020-10-27 01:04:09,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:09" (3/3) ... [2020-10-27 01:04:09,729 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-10-27 01:04:09,741 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:04:09,746 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:04:09,763 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:04:09,790 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:04:09,791 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:04:09,791 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:04:09,791 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:04:09,791 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:04:09,791 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:04:09,791 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:04:09,791 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:04:09,808 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-27 01:04:09,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 01:04:09,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:09,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:09,816 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:09,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:09,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1031583415, now seen corresponding path program 1 times [2020-10-27 01:04:09,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:09,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241055422] [2020-10-27 01:04:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:10,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:10,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:10,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:10,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:10,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 01:04:10,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:04:10,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-27 01:04:10,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:10,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:10,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:04:10,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:10,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:04:10,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:10,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:10,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:10,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:10,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:10,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:04:10,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:10,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:10,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:10,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:10,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:10,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:10,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:10,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:10,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:04:10,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:10,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:04:10,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:10,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:10,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:04:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:10,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:10,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:04:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:10,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:10,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:10,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:10,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:10,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:04:10,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:04:10,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 01:04:10,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:04:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:10,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:04:10,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241055422] [2020-10-27 01:04:10,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:10,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:04:10,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134564422] [2020-10-27 01:04:10,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:04:10,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:10,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:04:10,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:04:10,778 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 4 states. [2020-10-27 01:04:11,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:11,064 INFO L93 Difference]: Finished difference Result 117 states and 181 transitions. [2020-10-27 01:04:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:04:11,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-27 01:04:11,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:11,077 INFO L225 Difference]: With dead ends: 117 [2020-10-27 01:04:11,077 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 01:04:11,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:04:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 01:04:11,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-27 01:04:11,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 01:04:11,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2020-10-27 01:04:11,134 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 26 [2020-10-27 01:04:11,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:11,135 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2020-10-27 01:04:11,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:04:11,135 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2020-10-27 01:04:11,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 01:04:11,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:11,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:11,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:04:11,137 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:11,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:11,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2101718248, now seen corresponding path program 1 times [2020-10-27 01:04:11,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:11,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586329755] [2020-10-27 01:04:11,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:04:11,187 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:04:11,187 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:04:11,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:04:11,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:04:11 BoogieIcfgContainer [2020-10-27 01:04:11,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:04:11,214 INFO L168 Benchmark]: Toolchain (without parser) took 2619.64 ms. Allocated memory is still 155.2 MB. Free memory was 130.3 MB in the beginning and 83.2 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:11,215 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 100.3 MB in the end (delta: 68.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:04:11,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.30 ms. Allocated memory is still 155.2 MB. Free memory was 129.6 MB in the beginning and 117.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:11,216 INFO L168 Benchmark]: Boogie Preprocessor took 58.52 ms. Allocated memory is still 155.2 MB. Free memory was 117.9 MB in the beginning and 115.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:11,217 INFO L168 Benchmark]: RCFGBuilder took 695.65 ms. Allocated memory is still 155.2 MB. Free memory was 115.7 MB in the beginning and 122.7 MB in the end (delta: -7.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:11,218 INFO L168 Benchmark]: TraceAbstraction took 1489.59 ms. Allocated memory is still 155.2 MB. Free memory was 122.3 MB in the beginning and 83.2 MB in the end (delta: 39.0 MB). Peak memory consumption was 39.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:11,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 100.3 MB in the end (delta: 68.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 360.30 ms. Allocated memory is still 155.2 MB. Free memory was 129.6 MB in the beginning and 117.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.52 ms. Allocated memory is still 155.2 MB. Free memory was 117.9 MB in the beginning and 115.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 695.65 ms. Allocated memory is still 155.2 MB. Free memory was 115.7 MB in the beginning and 122.7 MB in the end (delta: -7.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1489.59 ms. Allocated memory is still 155.2 MB. Free memory was 122.3 MB in the beginning and 83.2 MB in the end (delta: 39.0 MB). Peak memory consumption was 39.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = __VERIFIER_nondet_float(); [L129] float y = -1.0f / 0.0f; [L131] CALL isfinite_float(x) [L111] __int32_t ix; [L113] ieee_float_shape_type gf_u; [L114] gf_u.value = (x) [L115] EXPR gf_u.word [L115] (ix) = gf_u.word [L117] ix &= 0x7fffffff [L118] return (((ix) < 0x7f800000L)); [L131] RET isfinite_float(x) [L131] COND TRUE isfinite_float(x) [L133] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L133] RET, EXPR fmod_float(x, y) [L133] float res = fmod_float(x, y); [L136] COND TRUE res != x [L137] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1131b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 8 SDslu, 62 SDs, 0 SdLazy, 77 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 2200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...