/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 interpolation-heuristic=FIRST --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_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:18:38,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:18:38,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:18:39,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:18:39,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:18:39,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:18:39,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:18:39,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:18:39,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:18:39,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:18:39,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:18:39,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:18:39,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:18:39,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:18:39,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:18:39,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:18:39,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:18:39,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:18:39,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:18:39,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:18:39,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:18:39,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:18:39,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:18:39,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:18:39,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:18:39,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:18:39,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:18:39,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:18:39,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:18:39,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:18:39,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:18:39,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:18:39,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:18:39,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:18:39,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:18:39,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:18:39,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:18:39,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:18:39,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:18:39,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:18:39,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:18:39,077 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 11:18:39,104 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:18:39,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:18:39,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:18:39,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:18:39,106 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:18:39,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:18:39,106 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:18:39,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:18:39,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:18:39,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:18:39,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:18:39,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:18:39,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:18:39,108 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:18:39,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:18:39,108 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:18:39,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:18:39,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:18:39,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:18:39,109 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:18:39,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:18:39,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:18:39,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:18:39,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:18:39,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:18:39,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:18:39,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:18:39,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:18:39,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:18:39,111 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:18:39,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:18:39,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:18:39,664 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:18:39,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:18:39,670 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:18:39,671 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-09-21 11:18:39,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa8ce0bf7/d2ee2a76e9b5462d96fb0ccb07eb298d/FLAGb4132a3b8 [2020-09-21 11:18:40,339 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:18:40,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-09-21 11:18:40,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa8ce0bf7/d2ee2a76e9b5462d96fb0ccb07eb298d/FLAGb4132a3b8 [2020-09-21 11:18:40,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa8ce0bf7/d2ee2a76e9b5462d96fb0ccb07eb298d [2020-09-21 11:18:40,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:18:40,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:18:40,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:40,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:18:40,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:18:40,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:40" (1/1) ... [2020-09-21 11:18:40,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3310a15d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:40, skipping insertion in model container [2020-09-21 11:18:40,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:40" (1/1) ... [2020-09-21 11:18:40,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:18:40,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:18:40,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:40,995 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:18:41,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:41,144 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:18:41,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:41 WrapperNode [2020-09-21 11:18:41,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:41,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:18:41,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:18:41,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:18:41,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:41" (1/1) ... [2020-09-21 11:18:41,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:41" (1/1) ... [2020-09-21 11:18:41,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:41" (1/1) ... [2020-09-21 11:18:41,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:41" (1/1) ... [2020-09-21 11:18:41,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:41" (1/1) ... [2020-09-21 11:18:41,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:41" (1/1) ... [2020-09-21 11:18:41,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:41" (1/1) ... [2020-09-21 11:18:41,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:18:41,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:18:41,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:18:41,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:18:41,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:41" (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 11:18:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:18:41,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:18:41,291 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-09-21 11:18:41,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-21 11:18:41,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:18:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:18:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-09-21 11:18:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:18:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:18:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:18:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:18:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:18:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:18:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-21 11:18:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:18:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:18:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:18:41,686 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:18:41,687 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-21 11:18:41,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:41 BoogieIcfgContainer [2020-09-21 11:18:41,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:18:41,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:18:41,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:18:41,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:18:41,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:18:40" (1/3) ... [2020-09-21 11:18:41,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79330e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:41, skipping insertion in model container [2020-09-21 11:18:41,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:41" (2/3) ... [2020-09-21 11:18:41,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79330e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:41, skipping insertion in model container [2020-09-21 11:18:41,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:41" (3/3) ... [2020-09-21 11:18:41,703 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-09-21 11:18:41,717 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:18:41,727 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:18:41,750 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:18:41,785 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:18:41,786 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:18:41,786 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:18:41,786 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:18:41,786 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:18:41,786 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:18:41,786 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:18:41,787 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:18:41,811 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-09-21 11:18:41,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:18:41,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:41,819 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 11:18:41,820 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:41,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:41,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-09-21 11:18:41,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:41,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564164829] [2020-09-21 11:18:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:41,979 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:41,979 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:41,980 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:41,980 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:41,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:18:41,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:41,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:18:41,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:18:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:41,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:42,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:42,086 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:42,087 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:42,087 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:42,088 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:42,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:42,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:42,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:42,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:42,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:42,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:42,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:42,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:42,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:42,123 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:42,124 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:42,124 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:42,124 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:42,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 11:18:42,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:42,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:42,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:42,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:42,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:18:42,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:42,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:42,136 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 11:18:42,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564164829] [2020-09-21 11:18:42,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:42,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:18:42,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439362810] [2020-09-21 11:18:42,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:18:42,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:42,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:18:42,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:18:42,164 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-09-21 11:18:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:42,429 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-09-21 11:18:42,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:18:42,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 11:18:42,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:42,446 INFO L225 Difference]: With dead ends: 94 [2020-09-21 11:18:42,446 INFO L226 Difference]: Without dead ends: 47 [2020-09-21 11:18:42,451 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 11:18:42,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-21 11:18:42,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-21 11:18:42,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-21 11:18:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-09-21 11:18:42,512 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-09-21 11:18:42,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:42,513 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-09-21 11:18:42,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:18:42,513 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-09-21 11:18:42,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 11:18:42,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:42,515 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] [2020-09-21 11:18:42,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:18:42,516 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:42,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:42,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-09-21 11:18:42,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:42,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350617269] [2020-09-21 11:18:42,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:18:42,593 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:18:42,593 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:18:42,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:18:42,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:18:42 BoogieIcfgContainer [2020-09-21 11:18:42,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:18:42,658 INFO L168 Benchmark]: Toolchain (without parser) took 1996.61 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 103.3 MB in the beginning and 99.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:42,659 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-09-21 11:18:42,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 487.19 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 181.5 MB in the end (delta: -79.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:42,663 INFO L168 Benchmark]: Boogie Preprocessor took 61.82 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 179.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:42,664 INFO L168 Benchmark]: RCFGBuilder took 481.94 ms. Allocated memory is still 202.9 MB. Free memory was 178.2 MB in the beginning and 154.9 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:42,665 INFO L168 Benchmark]: TraceAbstraction took 954.10 ms. Allocated memory is still 202.9 MB. Free memory was 154.0 MB in the beginning and 99.9 MB in the end (delta: 54.1 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:42,673 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 487.19 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 181.5 MB in the end (delta: -79.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.82 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 179.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.94 ms. Allocated memory is still 202.9 MB. Free memory was 178.2 MB in the beginning and 154.9 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 954.10 ms. Allocated memory is still 202.9 MB. Free memory was 154.0 MB in the beginning and 99.9 MB in the end (delta: 54.1 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L98] double x = -0.0; [L99] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; [L99] RET, EXPR floor_double(x) [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 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: 60 SDtfs, 55 SDslu, 5 SDs, 0 SdLazy, 65 SolverSat, 11 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=51occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 756 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...