/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:54:38,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:54:38,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:54:38,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:54:38,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:54:38,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:54:38,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:54:38,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:54:38,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:54:38,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:54:38,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:54:38,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:54:38,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:54:38,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:54:38,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:54:38,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:54:38,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:54:38,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:54:38,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:54:38,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:54:38,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:54:38,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:54:38,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:54:38,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:54:38,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:54:38,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:54:38,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:54:38,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:54:38,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:54:38,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:54:38,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:54:38,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:54:38,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:54:38,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:54:38,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:54:38,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:54:38,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:54:38,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:54:38,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:54:38,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:54:38,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:54:38,894 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 01:54:38,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:54:38,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:54:38,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:54:38,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:54:38,935 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:54:38,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:54:38,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:54:38,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:54:38,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:54:38,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:54:38,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:54:38,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:54:38,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:54:38,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:54:38,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:54:38,938 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:54:38,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:54:38,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:54:38,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:54:38,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:54:38,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:54:38,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:54:38,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:54:38,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:54:38,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:54:38,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:54:38,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:54:38,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:54:38,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:54:38,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:54:39,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:54:39,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:54:39,256 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:54:39,258 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:54:39,258 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:54:39,259 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2020-08-19 01:54:39,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30cff96be/70f33ccf2b9b4fffbd04f9a274cd281a/FLAG8aaf4ff6b [2020-08-19 01:54:39,781 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:54:39,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2020-08-19 01:54:39,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30cff96be/70f33ccf2b9b4fffbd04f9a274cd281a/FLAG8aaf4ff6b [2020-08-19 01:54:40,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30cff96be/70f33ccf2b9b4fffbd04f9a274cd281a [2020-08-19 01:54:40,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:54:40,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:54:40,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:54:40,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:54:40,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:54:40,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:54:40" (1/1) ... [2020-08-19 01:54:40,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ea971c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:40, skipping insertion in model container [2020-08-19 01:54:40,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:54:40" (1/1) ... [2020-08-19 01:54:40,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:54:40,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:54:40,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:54:40,357 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:54:40,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:54:40,518 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:54:40,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:40 WrapperNode [2020-08-19 01:54:40,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:54:40,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:54:40,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:54:40,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:54:40,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:40" (1/1) ... [2020-08-19 01:54:40,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:40" (1/1) ... [2020-08-19 01:54:40,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:40" (1/1) ... [2020-08-19 01:54:40,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:40" (1/1) ... [2020-08-19 01:54:40,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:40" (1/1) ... [2020-08-19 01:54:40,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:40" (1/1) ... [2020-08-19 01:54:40,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:40" (1/1) ... [2020-08-19 01:54:40,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:54:40,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:54:40,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:54:40,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:54:40,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:40" (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 01:54:40,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:54:40,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:54:40,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-08-19 01:54:40,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-19 01:54:40,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:54:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:54:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-19 01:54:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-08-19 01:54:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:54:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 01:54:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:54:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:54:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:54:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 01:54:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-19 01:54:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:54:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:54:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:54:41,150 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:54:41,151 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-08-19 01:54:41,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:54:41 BoogieIcfgContainer [2020-08-19 01:54:41,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:54:41,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:54:41,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:54:41,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:54:41,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:54:40" (1/3) ... [2020-08-19 01:54:41,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53046c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:54:41, skipping insertion in model container [2020-08-19 01:54:41,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:40" (2/3) ... [2020-08-19 01:54:41,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53046c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:54:41, skipping insertion in model container [2020-08-19 01:54:41,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:54:41" (3/3) ... [2020-08-19 01:54:41,165 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-08-19 01:54:41,176 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:54:41,184 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:54:41,199 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:54:41,222 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:54:41,222 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:54:41,222 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:54:41,222 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:54:41,223 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:54:41,223 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:54:41,223 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:54:41,223 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:54:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-08-19 01:54:41,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 01:54:41,247 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:41,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:54:41,248 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:41,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:41,253 INFO L82 PathProgramCache]: Analyzing trace with hash 85253742, now seen corresponding path program 1 times [2020-08-19 01:54:41,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:41,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220422627] [2020-08-19 01:54:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:41,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:41,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:54:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:41,484 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 01:54:41,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220422627] [2020-08-19 01:54:41,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:54:41,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:54:41,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372518687] [2020-08-19 01:54:41,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:54:41,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:54:41,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:54:41,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:54:41,513 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-08-19 01:54:41,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:54:41,890 INFO L93 Difference]: Finished difference Result 124 states and 187 transitions. [2020-08-19 01:54:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:54:41,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-08-19 01:54:41,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:54:41,904 INFO L225 Difference]: With dead ends: 124 [2020-08-19 01:54:41,904 INFO L226 Difference]: Without dead ends: 62 [2020-08-19 01:54:41,908 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 [2020-08-19 01:54:41,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-08-19 01:54:41,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-08-19 01:54:41,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-08-19 01:54:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2020-08-19 01:54:41,960 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 16 [2020-08-19 01:54:41,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:54:41,961 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2020-08-19 01:54:41,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:54:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2020-08-19 01:54:41,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:54:41,962 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:41,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:54:41,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:54:41,963 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:41,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:41,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1037787104, now seen corresponding path program 1 times [2020-08-19 01:54:41,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:41,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123389805] [2020-08-19 01:54:41,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:54:42,012 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:54:42,013 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:54:42,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:54:42,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:54:42 BoogieIcfgContainer [2020-08-19 01:54:42,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:54:42,036 INFO L168 Benchmark]: Toolchain (without parser) took 1932.52 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.6 MB in the beginning and 92.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 66.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:42,037 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 01:54:42,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.84 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.3 MB in the beginning and 180.4 MB in the end (delta: -79.1 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:42,039 INFO L168 Benchmark]: Boogie Preprocessor took 64.31 ms. Allocated memory is still 203.4 MB. Free memory was 180.4 MB in the beginning and 178.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:42,040 INFO L168 Benchmark]: RCFGBuilder took 572.45 ms. Allocated memory is still 203.4 MB. Free memory was 178.4 MB in the beginning and 148.1 MB in the end (delta: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:42,041 INFO L168 Benchmark]: TraceAbstraction took 876.13 ms. Allocated memory is still 203.4 MB. Free memory was 148.1 MB in the beginning and 92.8 MB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:42,045 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 414.84 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.3 MB in the beginning and 180.4 MB in the end (delta: -79.1 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.31 ms. Allocated memory is still 203.4 MB. Free memory was 180.4 MB in the beginning and 178.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 572.45 ms. Allocated memory is still 203.4 MB. Free memory was 178.4 MB in the beginning and 148.1 MB in the end (delta: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 876.13 ms. Allocated memory is still 203.4 MB. Free memory was 148.1 MB in the beginning and 92.8 MB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 154]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 149, overapproximation of someBinaryArithmeticDOUBLEoperation at line 33, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 153. Possible FailurePath: [L17] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L149] double x = -0.0; [L150] CALL, EXPR __ieee754_sqrt(x) [L20] double z; [L21] __int32_t sign = 0x80000000; [L22] __uint32_t r, t1, s1, ix1, q1; [L23] __int32_t ix0, s0, q, m, t, i; [L26] ieee_double_shape_type ew_u; [L27] ew_u.value = (x) [L28] EXPR ew_u.parts.msw [L28] (ix0) = ew_u.parts.msw [L29] EXPR ew_u.parts.lsw [L29] (ix1) = ew_u.parts.lsw [L32] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L33] return x * x + x; [L150] RET, EXPR __ieee754_sqrt(x) [L150] double res = __ieee754_sqrt(x); [L153] EXPR res == -0.0 && __signbit_double(res) == 1 [L153] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L154] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 75 SDslu, 5 SDs, 0 SdLazy, 85 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=66occurred 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, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 630 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...