/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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-eb0fd7c [2020-09-21 12:20:57,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:20:57,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:20:57,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:20:57,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:20:57,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:20:57,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:20:57,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:20:57,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:20:57,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:20:57,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:20:57,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:20:57,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:20:57,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:20:57,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:20:57,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:20:57,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:20:57,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:20:57,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:20:57,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:20:57,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:20:57,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:20:57,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:20:57,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:20:57,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:20:57,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:20:57,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:20:57,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:20:57,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:20:57,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:20:57,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:20:57,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:20:57,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:20:57,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:20:57,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:20:57,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:20:57,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:20:57,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:20:57,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:20:57,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:20:57,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:20:57,904 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 [2020-09-21 12:20:57,949 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:20:57,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:20:57,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:20:57,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:20:57,951 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:20:57,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:20:57,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:20:57,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:20:57,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:20:57,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:20:57,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:20:57,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:20:57,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:20:57,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:20:57,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:20:57,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:20:57,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:20:57,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:20:57,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:20:57,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:20:57,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:20:57,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:20:57,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:20:57,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:20:57,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:20:57,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:20:57,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:20:57,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:20:57,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:20:57,958 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:20:58,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:20:58,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:20:58,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:20:58,459 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:20:58,460 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:20:58,461 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-21 12:20:58,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7debb8c8e/b76de05f1e6448f2849ff14452a5790f/FLAGd92d89179 [2020-09-21 12:20:59,110 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:20:59,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-21 12:20:59,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7debb8c8e/b76de05f1e6448f2849ff14452a5790f/FLAGd92d89179 [2020-09-21 12:20:59,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7debb8c8e/b76de05f1e6448f2849ff14452a5790f [2020-09-21 12:20:59,434 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:20:59,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:20:59,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:59,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:20:59,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:20:59,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:59" (1/1) ... [2020-09-21 12:20:59,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244669af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:59, skipping insertion in model container [2020-09-21 12:20:59,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:59" (1/1) ... [2020-09-21 12:20:59,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:20:59,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:20:59,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:59,816 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:20:59,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:59,983 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:20:59,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:59 WrapperNode [2020-09-21 12:20:59,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:59,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:20:59,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:20:59,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:21:00,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:59" (1/1) ... [2020-09-21 12:21:00,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:59" (1/1) ... [2020-09-21 12:21:00,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:59" (1/1) ... [2020-09-21 12:21:00,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:59" (1/1) ... [2020-09-21 12:21:00,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:59" (1/1) ... [2020-09-21 12:21:00,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:59" (1/1) ... [2020-09-21 12:21:00,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:59" (1/1) ... [2020-09-21 12:21:00,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:21:00,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:21:00,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:21:00,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:21:00,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:59" (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 [2020-09-21 12:21:00,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:21:00,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:21:00,148 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-21 12:21:00,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-21 12:21:00,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:21:00,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:21:00,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-21 12:21:00,148 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-21 12:21:00,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:21:00,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 12:21:00,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:21:00,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:21:00,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 12:21:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:21:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-21 12:21:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:21:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:21:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-21 12:21:00,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:21:00,631 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:21:00,632 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-21 12:21:00,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:21:00 BoogieIcfgContainer [2020-09-21 12:21:00,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:21:00,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:21:00,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:21:00,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:21:00,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:20:59" (1/3) ... [2020-09-21 12:21:00,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d9e240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:21:00, skipping insertion in model container [2020-09-21 12:21:00,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:59" (2/3) ... [2020-09-21 12:21:00,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d9e240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:21:00, skipping insertion in model container [2020-09-21 12:21:00,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:21:00" (3/3) ... [2020-09-21 12:21:00,650 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-09-21 12:21:00,661 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:21:00,674 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:21:00,696 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:21:00,729 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:21:00,729 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:21:00,729 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:21:00,729 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:21:00,729 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:21:00,730 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:21:00,730 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:21:00,730 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:21:00,751 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-09-21 12:21:00,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:21:00,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:00,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:00,761 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:00,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:00,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-09-21 12:21:00,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:00,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449129647] [2020-09-21 12:21:00,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:00,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:01,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:01,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:01,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:21:01,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:21:01,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-21 12:21:01,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:01,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:01,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:21:01,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:01,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:21:01,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:01,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:01,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:01,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:21:01,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:01,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:21:01,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:01,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:01,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 12:21:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:01,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:01,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:01,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:01,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:21:01,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:21:01,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:21:01,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:21:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:01,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:21:01,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449129647] [2020-09-21 12:21:01,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:21:01,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:21:01,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635232987] [2020-09-21 12:21:01,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:21:01,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:01,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:21:01,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:21:01,366 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-09-21 12:21:01,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:01,659 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-09-21 12:21:01,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:21:01,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 12:21:01,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:01,675 INFO L225 Difference]: With dead ends: 116 [2020-09-21 12:21:01,675 INFO L226 Difference]: Without dead ends: 56 [2020-09-21 12:21:01,681 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 [2020-09-21 12:21:01,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-21 12:21:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-21 12:21:01,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-21 12:21:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-09-21 12:21:01,762 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-09-21 12:21:01,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:01,763 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-09-21 12:21:01,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:21:01,764 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-09-21 12:21:01,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 12:21:01,768 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:01,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:01,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:21:01,769 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:01,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:01,770 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-09-21 12:21:01,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:01,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901239103] [2020-09-21 12:21:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:21:01,867 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:21:01,867 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:21:01,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:21:01,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:21:01 BoogieIcfgContainer [2020-09-21 12:21:01,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:21:01,901 INFO L168 Benchmark]: Toolchain (without parser) took 2463.56 ms. Allocated memory was 142.1 MB in the beginning and 234.4 MB in the end (delta: 92.3 MB). Free memory was 103.8 MB in the beginning and 194.1 MB in the end (delta: -90.3 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:21:01,902 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:21:01,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 542.89 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 181.6 MB in the end (delta: -78.5 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:21:01,904 INFO L168 Benchmark]: Boogie Preprocessor took 73.61 ms. Allocated memory is still 205.0 MB. Free memory was 181.6 MB in the beginning and 179.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:21:01,905 INFO L168 Benchmark]: RCFGBuilder took 580.51 ms. Allocated memory is still 205.0 MB. Free memory was 179.0 MB in the beginning and 151.3 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:21:01,906 INFO L168 Benchmark]: TraceAbstraction took 1256.74 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 150.7 MB in the beginning and 194.1 MB in the end (delta: -43.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:21:01,910 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 542.89 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 181.6 MB in the end (delta: -78.5 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.61 ms. Allocated memory is still 205.0 MB. Free memory was 181.6 MB in the beginning and 179.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 580.51 ms. Allocated memory is still 205.0 MB. Free memory was 179.0 MB in the beginning and 151.3 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1256.74 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 150.7 MB in the beginning and 194.1 MB in the end (delta: -43.4 MB). There was no memory consumed. 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 30, 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, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 14 SDslu, 61 SDs, 0 SdLazy, 80 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=61occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...