/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=WIDEST --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 0.1.25-177f698 [2020-08-21 22:07:42,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:07:42,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:07:42,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:07:42,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:07:42,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:07:42,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:07:42,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:07:42,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:07:42,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:07:42,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:07:42,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:07:42,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:07:42,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:07:42,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:07:42,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:07:42,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:07:42,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:07:42,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:07:42,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:07:42,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:07:42,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:07:42,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:07:42,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:07:42,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:07:42,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:07:42,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:07:42,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:07:42,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:07:42,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 22:07:42,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:07:43,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:07:43,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:07:43,009 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 [2020-08-21 22:07:43,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:07:43,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:07:43,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:07:43,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:07:43,058 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:07:43,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:07:43,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:07:43,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:07:43,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:07:43,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:07:43,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:07:43,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:07:43,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:07:43,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:07:43,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:07:43,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:07:43,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:07:43,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:07:43,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:07:43,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:07:43,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:07:43,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:07:43,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:07:43,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:07:43,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:07:43,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:07:43,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:07:43,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:07:43,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:07:43,062 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:07:43,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:07:43,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:07:43,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:07:43,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:07:43,389 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:07:43,390 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-21 22:07:43,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/becc08a56/1ef87c7e14cc432a832aff052798eb66/FLAGf1e23742b [2020-08-21 22:07:43,959 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:07:43,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-21 22:07:43,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/becc08a56/1ef87c7e14cc432a832aff052798eb66/FLAGf1e23742b [2020-08-21 22:07:44,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/becc08a56/1ef87c7e14cc432a832aff052798eb66 [2020-08-21 22:07:44,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:07:44,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:07:44,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:07:44,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:07:44,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:07:44,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:07:44" (1/1) ... [2020-08-21 22:07:44,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e342344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:44, skipping insertion in model container [2020-08-21 22:07:44,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:07:44" (1/1) ... [2020-08-21 22:07:44,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:07:44,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:07:44,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:07:44,594 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:07:44,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:07:44,736 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:07:44,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:44 WrapperNode [2020-08-21 22:07:44,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:07:44,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:07:44,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:07:44,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:07:44,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:44" (1/1) ... [2020-08-21 22:07:44,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:44" (1/1) ... [2020-08-21 22:07:44,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:44" (1/1) ... [2020-08-21 22:07:44,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:44" (1/1) ... [2020-08-21 22:07:44,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:44" (1/1) ... [2020-08-21 22:07:44,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:44" (1/1) ... [2020-08-21 22:07:44,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:44" (1/1) ... [2020-08-21 22:07:44,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:07:44,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:07:44,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:07:44,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:07:44,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:44" (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 [2020-08-21 22:07:44,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:07:44,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:07:44,856 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-21 22:07:44,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 22:07:44,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:07:44,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:07:44,858 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-21 22:07:44,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:07:44,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 22:07:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:07:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:07:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:07:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 22:07:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 22:07:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:07:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:07:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:07:45,244 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:07:45,245 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 22:07:45,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:07:45 BoogieIcfgContainer [2020-08-21 22:07:45,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:07:45,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:07:45,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:07:45,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:07:45,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:07:44" (1/3) ... [2020-08-21 22:07:45,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e359f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:07:45, skipping insertion in model container [2020-08-21 22:07:45,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:44" (2/3) ... [2020-08-21 22:07:45,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e359f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:07:45, skipping insertion in model container [2020-08-21 22:07:45,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:07:45" (3/3) ... [2020-08-21 22:07:45,258 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-21 22:07:45,270 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:07:45,277 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:07:45,294 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:07:45,321 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:07:45,321 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:07:45,321 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:07:45,321 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:07:45,321 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:07:45,322 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:07:45,322 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:07:45,322 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:07:45,344 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-21 22:07:45,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 22:07:45,351 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:07:45,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:07:45,352 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:07:45,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:07:45,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-21 22:07:45,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:07:45,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363495864] [2020-08-21 22:07:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:07:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:07:45,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:07:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:07:45,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:07:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:07:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:07:45,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363495864] [2020-08-21 22:07:45,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:07:45,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:07:45,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599227158] [2020-08-21 22:07:45,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:07:45,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:07:45,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:07:45,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:07:45,624 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-21 22:07:45,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:07:45,934 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-21 22:07:45,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:07:45,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-21 22:07:45,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:07:45,957 INFO L225 Difference]: With dead ends: 94 [2020-08-21 22:07:45,957 INFO L226 Difference]: Without dead ends: 47 [2020-08-21 22:07:45,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:07:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-21 22:07:45,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-21 22:07:45,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-21 22:07:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-21 22:07:46,003 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-21 22:07:46,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:07:46,004 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-21 22:07:46,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:07:46,004 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-21 22:07:46,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 22:07:46,006 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:07:46,006 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] [2020-08-21 22:07:46,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:07:46,007 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:07:46,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:07:46,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-21 22:07:46,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:07:46,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474189859] [2020-08-21 22:07:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:07:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:07:46,058 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:07:46,058 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:07:46,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:07:46,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:07:46 BoogieIcfgContainer [2020-08-21 22:07:46,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:07:46,089 INFO L168 Benchmark]: Toolchain (without parser) took 1768.62 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 105.0 MB in the end (delta: -2.0 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:07:46,090 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 22:07:46,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.85 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 179.8 MB in the end (delta: -77.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:07:46,092 INFO L168 Benchmark]: Boogie Preprocessor took 46.19 ms. Allocated memory is still 202.9 MB. Free memory was 179.8 MB in the beginning and 177.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:07:46,093 INFO L168 Benchmark]: RCFGBuilder took 465.77 ms. Allocated memory is still 202.9 MB. Free memory was 177.8 MB in the beginning and 153.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:07:46,094 INFO L168 Benchmark]: TraceAbstraction took 835.08 ms. Allocated memory is still 202.9 MB. Free memory was 153.1 MB in the beginning and 105.0 MB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:07:46,099 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 415.85 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 179.8 MB in the end (delta: -77.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.19 ms. Allocated memory is still 202.9 MB. Free memory was 179.8 MB in the beginning and 177.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.77 ms. Allocated memory is still 202.9 MB. Free memory was 177.8 MB in the beginning and 153.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 835.08 ms. Allocated memory is still 202.9 MB. Free memory was 153.1 MB in the beginning and 105.0 MB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 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: 0.7s, 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, 0.1s 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...