/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:59:35,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:59:35,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:59:35,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:59:35,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:59:35,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:59:35,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:59:35,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:59:35,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:59:35,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:59:35,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:59:35,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:59:35,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:59:35,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:59:35,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:59:35,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:59:35,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:59:35,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:59:35,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:59:35,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:59:35,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:59:35,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:59:35,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:59:35,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:59:35,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:59:35,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:59:35,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:59:35,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:59:35,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:59:35,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:59:35,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:59:35,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:59:35,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:59:35,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:59:35,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:59:35,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:59:35,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:59:35,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:59:35,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:59:35,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:59:35,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:59:35,121 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 [2020-08-22 02:59:35,165 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:59:35,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:59:35,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:59:35,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:59:35,168 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:59:35,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:59:35,169 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:59:35,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:59:35,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:59:35,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:59:35,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:59:35,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:59:35,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:59:35,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:59:35,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:59:35,172 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:59:35,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:59:35,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:59:35,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:59:35,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:59:35,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:59:35,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:59:35,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:59:35,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:59:35,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:59:35,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:59:35,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:59:35,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:59:35,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:59:35,175 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 02:59:35,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:59:35,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:59:35,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:59:35,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:59:35,474 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:59:35,474 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-22 02:59:35,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f541b04ae/79c6c36b09384108963ab58f9da4da0c/FLAG24262e672 [2020-08-22 02:59:36,012 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:59:36,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-22 02:59:36,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f541b04ae/79c6c36b09384108963ab58f9da4da0c/FLAG24262e672 [2020-08-22 02:59:36,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f541b04ae/79c6c36b09384108963ab58f9da4da0c [2020-08-22 02:59:36,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:59:36,396 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:59:36,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:59:36,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:59:36,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:59:36,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:59:36" (1/1) ... [2020-08-22 02:59:36,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@358c3c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:36, skipping insertion in model container [2020-08-22 02:59:36,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:59:36" (1/1) ... [2020-08-22 02:59:36,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:59:36,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:59:36,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:59:36,664 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:59:36,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:59:36,827 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:59:36,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:36 WrapperNode [2020-08-22 02:59:36,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:59:36,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:59:36,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:59:36,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:59:36,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:36" (1/1) ... [2020-08-22 02:59:36,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:36" (1/1) ... [2020-08-22 02:59:36,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:36" (1/1) ... [2020-08-22 02:59:36,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:36" (1/1) ... [2020-08-22 02:59:36,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:36" (1/1) ... [2020-08-22 02:59:36,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:36" (1/1) ... [2020-08-22 02:59:36,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:36" (1/1) ... [2020-08-22 02:59:36,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:59:36,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:59:36,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:59:36,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:59:36,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:36" (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 [2020-08-22 02:59:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:59:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:59:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 02:59:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-22 02:59:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-22 02:59:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:59:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:59:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 02:59:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 02:59:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-22 02:59:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:59:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 02:59:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:59:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:59:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 02:59:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:59:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-22 02:59:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:59:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:59:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 02:59:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:59:37,628 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:59:37,629 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-22 02:59:37,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:59:37 BoogieIcfgContainer [2020-08-22 02:59:37,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:59:37,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:59:37,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:59:37,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:59:37,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:59:36" (1/3) ... [2020-08-22 02:59:37,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d3aa38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:59:37, skipping insertion in model container [2020-08-22 02:59:37,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:36" (2/3) ... [2020-08-22 02:59:37,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d3aa38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:59:37, skipping insertion in model container [2020-08-22 02:59:37,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:59:37" (3/3) ... [2020-08-22 02:59:37,643 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-22 02:59:37,652 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:59:37,659 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:59:37,671 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:59:37,693 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:59:37,693 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:59:37,693 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:59:37,693 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:59:37,694 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:59:37,694 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:59:37,694 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:59:37,694 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:59:37,713 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-22 02:59:37,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 02:59:37,720 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:59:37,721 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] [2020-08-22 02:59:37,721 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:59:37,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:59:37,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-22 02:59:37,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:59:37,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719207283] [2020-08-22 02:59:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:59:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:37,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:59:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:37,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:59:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:37,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:59:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:59:37,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719207283] [2020-08-22 02:59:37,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:59:37,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:59:37,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592785164] [2020-08-22 02:59:37,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:59:37,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:59:37,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:59:37,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:59:37,998 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-22 02:59:38,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:59:38,339 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-22 02:59:38,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:59:38,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 02:59:38,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:59:38,354 INFO L225 Difference]: With dead ends: 138 [2020-08-22 02:59:38,354 INFO L226 Difference]: Without dead ends: 68 [2020-08-22 02:59:38,358 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 [2020-08-22 02:59:38,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-22 02:59:38,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-22 02:59:38,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-22 02:59:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-22 02:59:38,409 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-22 02:59:38,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:59:38,409 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-22 02:59:38,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:59:38,410 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-22 02:59:38,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 02:59:38,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:59:38,411 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] [2020-08-22 02:59:38,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:59:38,412 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:59:38,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:59:38,413 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-22 02:59:38,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:59:38,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419270552] [2020-08-22 02:59:38,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:59:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:59:38,516 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:59:38,516 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:59:38,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:59:38,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:59:38 BoogieIcfgContainer [2020-08-22 02:59:38,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:59:38,562 INFO L168 Benchmark]: Toolchain (without parser) took 2164.57 ms. Allocated memory was 140.5 MB in the beginning and 235.4 MB in the end (delta: 94.9 MB). Free memory was 102.6 MB in the beginning and 190.4 MB in the end (delta: -87.8 MB). Peak memory consumption was 7.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:38,563 INFO L168 Benchmark]: CDTParser took 0.20 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. [2020-08-22 02:59:38,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.84 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 178.8 MB in the end (delta: -76.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:38,567 INFO L168 Benchmark]: Boogie Preprocessor took 63.80 ms. Allocated memory is still 203.4 MB. Free memory was 178.8 MB in the beginning and 176.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:38,568 INFO L168 Benchmark]: RCFGBuilder took 741.51 ms. Allocated memory is still 203.4 MB. Free memory was 175.5 MB in the beginning and 139.1 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:38,570 INFO L168 Benchmark]: TraceAbstraction took 920.81 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 139.1 MB in the beginning and 190.4 MB in the end (delta: -51.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:59:38,581 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 430.84 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 178.8 MB in the end (delta: -76.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.80 ms. Allocated memory is still 203.4 MB. Free memory was 178.8 MB in the beginning and 176.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 741.51 ms. Allocated memory is still 203.4 MB. Free memory was 175.5 MB in the beginning and 139.1 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 920.81 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 139.1 MB in the beginning and 190.4 MB in the end (delta: -51.2 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...