/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:33:48,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:33:48,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:33:48,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:33:48,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:33:48,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:33:48,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:33:48,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:33:48,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:33:48,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:33:48,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:33:48,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:33:48,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:33:48,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:33:48,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:33:48,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:33:48,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:33:48,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:33:48,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:33:48,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:33:48,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:33:48,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:33:48,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:33:48,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:33:48,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:33:48,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:33:48,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:33:48,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:33:48,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:33:48,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:33:48,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:33:48,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:33:48,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:33:48,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:33:48,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:33:48,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:33:48,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:33:48,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:33:48,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:33:48,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:33:48,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:33:48,816 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 [2020-09-25 06:33:48,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:33:48,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:33:48,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:33:48,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:33:48,862 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:33:48,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:33:48,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:33:48,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:33:48,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:33:48,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:33:48,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:33:48,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:33:48,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:33:48,865 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:33:48,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:33:48,866 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:33:48,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:33:48,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:33:48,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:33:48,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:33:48,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:33:48,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:33:48,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:33:48,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:33:48,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:33:48,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:33:48,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:33:48,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:33:48,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:33:48,869 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:33:49,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:33:49,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:33:49,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:33:49,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:33:49,359 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:33:49,360 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-25 06:33:49,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fa1474f5/b4658d13dcee48c8a761cadd248b6635/FLAGc0881845f [2020-09-25 06:33:50,003 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:33:50,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-25 06:33:50,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fa1474f5/b4658d13dcee48c8a761cadd248b6635/FLAGc0881845f [2020-09-25 06:33:50,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fa1474f5/b4658d13dcee48c8a761cadd248b6635 [2020-09-25 06:33:50,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:33:50,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:33:50,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:33:50,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:33:50,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:33:50,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:33:50" (1/1) ... [2020-09-25 06:33:50,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e62aa9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:50, skipping insertion in model container [2020-09-25 06:33:50,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:33:50" (1/1) ... [2020-09-25 06:33:50,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:33:50,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:33:50,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:33:50,713 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:33:50,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:33:50,863 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:33:50,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:50 WrapperNode [2020-09-25 06:33:50,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:33:50,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:33:50,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:33:50,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:33:50,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:50" (1/1) ... [2020-09-25 06:33:50,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:50" (1/1) ... [2020-09-25 06:33:50,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:50" (1/1) ... [2020-09-25 06:33:50,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:50" (1/1) ... [2020-09-25 06:33:50,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:50" (1/1) ... [2020-09-25 06:33:50,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:50" (1/1) ... [2020-09-25 06:33:50,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:50" (1/1) ... [2020-09-25 06:33:50,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:33:50,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:33:50,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:33:50,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:33:50,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:50" (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 [2020-09-25 06:33:51,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:33:51,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:33:51,010 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-25 06:33:51,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-25 06:33:51,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:33:51,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:33:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-25 06:33:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-25 06:33:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 06:33:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 06:33:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:33:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:33:51,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 06:33:51,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:33:51,012 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-25 06:33:51,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:33:51,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:33:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-25 06:33:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:33:51,592 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:33:51,593 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-25 06:33:51,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:33:51 BoogieIcfgContainer [2020-09-25 06:33:51,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:33:51,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:33:51,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:33:51,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:33:51,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:33:50" (1/3) ... [2020-09-25 06:33:51,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774ad962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:33:51, skipping insertion in model container [2020-09-25 06:33:51,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:50" (2/3) ... [2020-09-25 06:33:51,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774ad962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:33:51, skipping insertion in model container [2020-09-25 06:33:51,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:33:51" (3/3) ... [2020-09-25 06:33:51,617 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-09-25 06:33:51,629 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:33:51,643 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:33:51,665 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:33:51,706 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:33:51,707 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:33:51,707 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:33:51,707 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:33:51,707 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:33:51,707 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:33:51,707 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:33:51,708 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:33:51,733 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-09-25 06:33:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 06:33:51,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:51,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:33:51,745 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:51,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:51,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1988505082, now seen corresponding path program 1 times [2020-09-25 06:33:51,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:51,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426561016] [2020-09-25 06:33:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:51,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:52,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:52,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:52,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 06:33:52,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:33:52,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 06:33:52,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:52,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 06:33:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:52,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:33:52,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:33:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:52,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:52,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:52,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:33:52,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:52,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:33:52,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:52,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:52,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:52,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:52,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:52,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:52,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 06:33:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:52,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:52,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:52,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:52,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:33:52,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:33:52,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:33:52,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:52,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:33:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:52,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:33:52,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426561016] [2020-09-25 06:33:52,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:33:52,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:33:52,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615333998] [2020-09-25 06:33:52,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:33:52,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:33:52,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:33:52,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:33:52,349 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 4 states. [2020-09-25 06:33:52,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:33:52,807 INFO L93 Difference]: Finished difference Result 308 states and 372 transitions. [2020-09-25 06:33:52,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 06:33:52,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-25 06:33:52,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:33:52,824 INFO L225 Difference]: With dead ends: 308 [2020-09-25 06:33:52,825 INFO L226 Difference]: Without dead ends: 158 [2020-09-25 06:33:52,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:33:52,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-25 06:33:52,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-25 06:33:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 06:33:52,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 174 transitions. [2020-09-25 06:33:52,894 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 174 transitions. Word has length 43 [2020-09-25 06:33:52,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:33:52,894 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 174 transitions. [2020-09-25 06:33:52,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:33:52,895 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 174 transitions. [2020-09-25 06:33:52,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 06:33:52,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:52,897 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, 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, 1, 1, 1] [2020-09-25 06:33:52,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:33:52,898 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:52,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:52,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1298136515, now seen corresponding path program 1 times [2020-09-25 06:33:52,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:52,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131222358] [2020-09-25 06:33:52,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 06:33:52,989 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 06:33:52,989 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 06:33:52,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:33:53,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:33:53 BoogieIcfgContainer [2020-09-25 06:33:53,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:33:53,021 INFO L168 Benchmark]: Toolchain (without parser) took 2653.49 ms. Allocated memory was 140.5 MB in the beginning and 235.4 MB in the end (delta: 94.9 MB). Free memory was 103.1 MB in the beginning and 158.0 MB in the end (delta: -55.0 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:53,022 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 06:33:53,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 489.22 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 180.1 MB in the end (delta: -77.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:53,024 INFO L168 Benchmark]: Boogie Preprocessor took 73.31 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 177.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:53,025 INFO L168 Benchmark]: RCFGBuilder took 666.93 ms. Allocated memory is still 203.4 MB. Free memory was 177.6 MB in the beginning and 140.7 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:53,026 INFO L168 Benchmark]: TraceAbstraction took 1411.65 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 140.0 MB in the beginning and 158.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:53,030 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 489.22 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 180.1 MB in the end (delta: -77.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.31 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 177.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 666.93 ms. Allocated memory is still 203.4 MB. Free memory was 177.6 MB in the beginning and 140.7 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1411.65 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 140.0 MB in the beginning and 158.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 32, overapproximation of bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] EXPR res == 0.0f && __signbit_float(res) == 0 [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 166 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 179 SDtfs, 39 SDslu, 129 SDs, 0 SdLazy, 195 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred 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, 0.4s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 3150 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...