/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 enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:28:51,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:28:51,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:28:51,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:28:51,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:28:51,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:28:51,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:28:51,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:28:51,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:28:51,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:28:51,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:28:52,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:28:52,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:28:52,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:28:52,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:28:52,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:28:52,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:28:52,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:28:52,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:28:52,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:28:52,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:28:52,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:28:52,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:28:52,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:28:52,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:28:52,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:28:52,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:28:52,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:28:52,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:28:52,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:28:52,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:28:52,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:28:52,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:28:52,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:28:52,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:28:52,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:28:52,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:28:52,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:28:52,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:28:52,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:28:52,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:28:52,033 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 [2020-08-18 23:28:52,055 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:28:52,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:28:52,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:28:52,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:28:52,057 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:28:52,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:28:52,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:28:52,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:28:52,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:28:52,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:28:52,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:28:52,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:28:52,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:28:52,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:28:52,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:28:52,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:28:52,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:28:52,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:28:52,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:28:52,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:28:52,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:28:52,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:28:52,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:28:52,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:28:52,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:28:52,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:28:52,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:28:52,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:28:52,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:28:52,062 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 -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:28:52,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:28:52,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:28:52,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:28:52,395 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:28:52,397 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:28:52,397 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-18 23:28:52,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b86f4b07/b969ebb23bc1454aa2df4feeb68f5f88/FLAG5a45b6c2f [2020-08-18 23:28:52,949 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:28:52,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-18 23:28:52,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b86f4b07/b969ebb23bc1454aa2df4feeb68f5f88/FLAG5a45b6c2f [2020-08-18 23:28:53,314 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b86f4b07/b969ebb23bc1454aa2df4feeb68f5f88 [2020-08-18 23:28:53,323 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:28:53,325 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:28:53,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:28:53,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:28:53,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:28:53,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656a7a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53, skipping insertion in model container [2020-08-18 23:28:53,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:28:53,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:28:53,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:28:53,621 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:28:53,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:28:53,829 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:28:53,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53 WrapperNode [2020-08-18 23:28:53,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:28:53,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:28:53,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:28:53,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:28:53,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (1/1) ... [2020-08-18 23:28:53,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:28:53,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:28:53,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:28:53,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:28:53,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (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 [2020-08-18 23:28:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:28:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:28:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 23:28:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-18 23:28:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-18 23:28:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:28:53,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:28:53,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 23:28:53,974 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 23:28:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-18 23:28:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:28:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 23:28:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:28:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:28:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 23:28:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:28:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-18 23:28:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:28:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:28:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 23:28:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:28:54,608 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:28:54,608 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-18 23:28:54,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:28:54 BoogieIcfgContainer [2020-08-18 23:28:54,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:28:54,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:28:54,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:28:54,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:28:54,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:28:53" (1/3) ... [2020-08-18 23:28:54,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df4133b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:28:54, skipping insertion in model container [2020-08-18 23:28:54,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:53" (2/3) ... [2020-08-18 23:28:54,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df4133b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:28:54, skipping insertion in model container [2020-08-18 23:28:54,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:28:54" (3/3) ... [2020-08-18 23:28:54,626 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-18 23:28:54,637 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:28:54,645 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:28:54,655 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:28:54,677 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:28:54,677 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:28:54,677 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:28:54,677 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:28:54,677 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:28:54,678 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:28:54,678 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:28:54,678 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:28:54,696 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-18 23:28:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 23:28:54,704 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:28:54,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:28:54,705 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:28:54,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:28:54,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-18 23:28:54,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:28:54,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226429535] [2020-08-18 23:28:54,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:28:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:28:54,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:28:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:28:54,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:28:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:28:54,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 23:28:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:28:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:28:54,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226429535] [2020-08-18 23:28:54,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:28:54,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:28:54,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000216349] [2020-08-18 23:28:54,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:28:54,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:28:54,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:28:54,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:28:54,979 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-18 23:28:55,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:28:55,310 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-18 23:28:55,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:28:55,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 23:28:55,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:28:55,323 INFO L225 Difference]: With dead ends: 138 [2020-08-18 23:28:55,323 INFO L226 Difference]: Without dead ends: 68 [2020-08-18 23:28:55,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:28:55,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-18 23:28:55,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-18 23:28:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-18 23:28:55,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-18 23:28:55,376 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-18 23:28:55,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:28:55,377 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-18 23:28:55,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:28:55,377 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-18 23:28:55,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 23:28:55,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:28:55,379 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] [2020-08-18 23:28:55,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:28:55,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:28:55,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:28:55,380 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-18 23:28:55,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:28:55,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612902364] [2020-08-18 23:28:55,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:28:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 23:28:55,505 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 23:28:55,505 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:28:55,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:28:55,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:28:55 BoogieIcfgContainer [2020-08-18 23:28:55,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:28:55,560 INFO L168 Benchmark]: Toolchain (without parser) took 2233.53 ms. Allocated memory was 140.0 MB in the beginning and 235.9 MB in the end (delta: 95.9 MB). Free memory was 102.2 MB in the beginning and 192.0 MB in the end (delta: -89.9 MB). Peak memory consumption was 6.1 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:55,561 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 23:28:55,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 504.18 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 178.3 MB in the end (delta: -76.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:55,563 INFO L168 Benchmark]: Boogie Preprocessor took 83.56 ms. Allocated memory is still 202.9 MB. Free memory was 178.3 MB in the beginning and 175.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:55,564 INFO L168 Benchmark]: RCFGBuilder took 701.24 ms. Allocated memory is still 202.9 MB. Free memory was 175.0 MB in the beginning and 138.7 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:55,565 INFO L168 Benchmark]: TraceAbstraction took 939.89 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 138.7 MB in the beginning and 192.0 MB in the end (delta: -53.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 23:28:55,569 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 504.18 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 178.3 MB in the end (delta: -76.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.56 ms. Allocated memory is still 202.9 MB. Free memory was 178.3 MB in the beginning and 175.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 701.24 ms. Allocated memory is still 202.9 MB. Free memory was 175.0 MB in the beginning and 138.7 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 939.89 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 138.7 MB in the beginning and 192.0 MB in the end (delta: -53.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...