/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:57:09,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:57:09,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:57:09,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:57:09,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:57:09,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:57:09,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:57:09,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:57:09,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:57:09,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:57:09,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:57:09,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:57:09,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:57:09,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:57:09,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:57:09,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:57:09,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:57:09,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:57:09,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:57:09,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:57:09,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:57:09,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:57:09,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:57:09,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:57:09,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:57:09,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:57:09,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:57:09,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:57:09,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:57:09,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:57:09,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:57:09,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:57:09,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:57:09,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:57:09,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:57:09,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:57:09,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:57:09,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:57:09,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:57:09,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:57:09,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:57:09,213 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 [2020-08-19 05:57:09,257 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:57:09,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:57:09,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:57:09,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:57:09,261 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:57:09,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:57:09,261 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:57:09,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:57:09,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:57:09,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:57:09,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:57:09,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:57:09,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:57:09,266 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:57:09,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:57:09,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:57:09,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:57:09,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:57:09,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:57:09,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:57:09,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:57:09,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:57:09,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:57:09,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:57:09,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:57:09,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:57:09,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:57:09,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:57:09,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:57:09,272 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=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 05:57:09,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:57:09,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:57:09,613 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:57:09,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:57:09,618 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:57:09,619 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-19 05:57:09,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e726445/cc7b2c3c7ba34fcab8e68b589ba8a9a8/FLAGc58b8d6cf [2020-08-19 05:57:10,210 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:57:10,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-19 05:57:10,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e726445/cc7b2c3c7ba34fcab8e68b589ba8a9a8/FLAGc58b8d6cf [2020-08-19 05:57:10,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e726445/cc7b2c3c7ba34fcab8e68b589ba8a9a8 [2020-08-19 05:57:10,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:57:10,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:57:10,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:57:10,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:57:10,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:57:10,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:57:10" (1/1) ... [2020-08-19 05:57:10,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@622d9ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:10, skipping insertion in model container [2020-08-19 05:57:10,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:57:10" (1/1) ... [2020-08-19 05:57:10,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:57:10,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:57:10,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:57:10,851 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:57:10,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:57:10,998 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:57:10,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:10 WrapperNode [2020-08-19 05:57:10,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:57:10,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:57:10,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:57:10,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:57:11,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:10" (1/1) ... [2020-08-19 05:57:11,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:10" (1/1) ... [2020-08-19 05:57:11,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:10" (1/1) ... [2020-08-19 05:57:11,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:10" (1/1) ... [2020-08-19 05:57:11,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:10" (1/1) ... [2020-08-19 05:57:11,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:10" (1/1) ... [2020-08-19 05:57:11,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:10" (1/1) ... [2020-08-19 05:57:11,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:57:11,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:57:11,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:57:11,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:57:11,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:10" (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 [2020-08-19 05:57:11,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:57:11,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:57:11,116 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-19 05:57:11,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 05:57:11,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:57:11,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:57:11,117 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-19 05:57:11,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:57:11,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 05:57:11,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:57:11,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:57:11,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:57:11,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 05:57:11,118 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 05:57:11,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:57:11,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:57:11,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:57:11,450 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:57:11,451 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 05:57:11,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:57:11 BoogieIcfgContainer [2020-08-19 05:57:11,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:57:11,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:57:11,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:57:11,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:57:11,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:57:10" (1/3) ... [2020-08-19 05:57:11,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fcf873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:57:11, skipping insertion in model container [2020-08-19 05:57:11,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:10" (2/3) ... [2020-08-19 05:57:11,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fcf873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:57:11, skipping insertion in model container [2020-08-19 05:57:11,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:57:11" (3/3) ... [2020-08-19 05:57:11,465 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-08-19 05:57:11,477 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:57:11,486 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:57:11,509 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:57:11,558 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:57:11,558 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:57:11,559 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:57:11,559 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:57:11,559 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:57:11,559 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:57:11,559 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:57:11,560 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:57:11,582 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-19 05:57:11,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 05:57:11,590 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:57:11,591 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] [2020-08-19 05:57:11,591 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:57:11,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:57:11,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-08-19 05:57:11,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:57:11,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530064502] [2020-08-19 05:57:11,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:57:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:57:11,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:57:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:57:11,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:57:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:57:11,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:57:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:57:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:57:11,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530064502] [2020-08-19 05:57:11,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:57:11,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:57:11,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978584440] [2020-08-19 05:57:11,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:57:11,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:57:11,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:57:11,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:57:11,885 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-19 05:57:12,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:57:12,179 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-19 05:57:12,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:57:12,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-19 05:57:12,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:57:12,196 INFO L225 Difference]: With dead ends: 86 [2020-08-19 05:57:12,196 INFO L226 Difference]: Without dead ends: 43 [2020-08-19 05:57:12,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:57:12,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-19 05:57:12,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-19 05:57:12,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-19 05:57:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-19 05:57:12,245 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-19 05:57:12,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:57:12,245 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-19 05:57:12,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:57:12,246 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-19 05:57:12,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 05:57:12,247 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:57:12,247 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] [2020-08-19 05:57:12,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:57:12,248 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:57:12,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:57:12,249 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-08-19 05:57:12,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:57:12,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125905984] [2020-08-19 05:57:12,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:57:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:57:12,306 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:57:12,306 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:57:12,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:57:12,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:57:12 BoogieIcfgContainer [2020-08-19 05:57:12,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:57:12,334 INFO L168 Benchmark]: Toolchain (without parser) took 1722.78 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 104.2 MB in the beginning and 109.7 MB in the end (delta: -5.5 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:12,335 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 05:57:12,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.25 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 104.0 MB in the beginning and 182.5 MB in the end (delta: -78.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:12,338 INFO L168 Benchmark]: Boogie Preprocessor took 53.50 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 179.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:12,338 INFO L168 Benchmark]: RCFGBuilder took 404.20 ms. Allocated memory is still 204.5 MB. Free memory was 179.9 MB in the beginning and 158.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:12,339 INFO L168 Benchmark]: TraceAbstraction took 873.32 ms. Allocated memory is still 204.5 MB. Free memory was 157.4 MB in the beginning and 109.7 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:12,343 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 387.25 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 104.0 MB in the beginning and 182.5 MB in the end (delta: -78.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.50 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 179.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.20 ms. Allocated memory is still 204.5 MB. Free memory was 179.9 MB in the beginning and 158.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 873.32 ms. Allocated memory is still 204.5 MB. Free memory was 157.4 MB in the beginning and 109.7 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: 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 someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L88] double x = 0.0 / 0.0; [L89] 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; [L89] RET, EXPR floor_double(x) [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) [L80] return x != x; [L92] RET, EXPR isnan_double(res) [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 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...