/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=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:17:22,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:17:22,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:17:22,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:17:22,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:17:22,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:17:22,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:17:22,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:17:22,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:17:22,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:17:22,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:17:22,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:17:22,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:17:22,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:17:22,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:17:22,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:17:22,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:17:22,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:17:22,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:17:23,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:17:23,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:17:23,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:17:23,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:17:23,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:17:23,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 00:17:23,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:17:23,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:17:23,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:17:23,043 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 00:17:23,074 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:17:23,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:17:23,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:17:23,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:17:23,076 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:17:23,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:17:23,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:17:23,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:17:23,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:17:23,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:17:23,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:17:23,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:17:23,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:17:23,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:17:23,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:17:23,078 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:17:23,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:17:23,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:17:23,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:17:23,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:17:23,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:17:23,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:17:23,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:17:23,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:17:23,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:17:23,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:17:23,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:17:23,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:17:23,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:17:23,081 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=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:17:23,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:17:23,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:17:23,399 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:17:23,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:17:23,401 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:17:23,402 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-19 00:17:23,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e49c1fa7/633fa792f56046d6850a44c585224238/FLAGa902f73b1 [2020-08-19 00:17:23,970 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:17:23,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-19 00:17:23,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e49c1fa7/633fa792f56046d6850a44c585224238/FLAGa902f73b1 [2020-08-19 00:17:24,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e49c1fa7/633fa792f56046d6850a44c585224238 [2020-08-19 00:17:24,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:17:24,339 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:17:24,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:17:24,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:17:24,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:17:24,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:17:24" (1/1) ... [2020-08-19 00:17:24,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32988492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:24, skipping insertion in model container [2020-08-19 00:17:24,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:17:24" (1/1) ... [2020-08-19 00:17:24,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:17:24,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:17:24,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:17:24,773 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:17:24,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:17:24,857 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:17:24,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:24 WrapperNode [2020-08-19 00:17:24,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:17:24,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:17:24,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:17:24,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:17:24,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:24" (1/1) ... [2020-08-19 00:17:24,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:24" (1/1) ... [2020-08-19 00:17:24,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:24" (1/1) ... [2020-08-19 00:17:24,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:24" (1/1) ... [2020-08-19 00:17:24,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:24" (1/1) ... [2020-08-19 00:17:24,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:24" (1/1) ... [2020-08-19 00:17:24,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:24" (1/1) ... [2020-08-19 00:17:24,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:17:24,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:17:24,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:17:24,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:17:24,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:24" (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 00:17:24,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:17:24,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:17:24,992 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 00:17:24,992 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-19 00:17:24,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-19 00:17:24,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:17:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:17:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-19 00:17:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 00:17:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-19 00:17:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:17:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 00:17:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:17:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:17:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 00:17:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:17:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-19 00:17:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:17:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:17:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 00:17:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:17:25,615 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:17:25,616 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-19 00:17:25,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:17:25 BoogieIcfgContainer [2020-08-19 00:17:25,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:17:25,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:17:25,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:17:25,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:17:25,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:17:24" (1/3) ... [2020-08-19 00:17:25,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56281bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:17:25, skipping insertion in model container [2020-08-19 00:17:25,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:24" (2/3) ... [2020-08-19 00:17:25,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56281bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:17:25, skipping insertion in model container [2020-08-19 00:17:25,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:17:25" (3/3) ... [2020-08-19 00:17:25,630 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-19 00:17:25,641 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:17:25,649 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:17:25,664 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:17:25,690 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:17:25,690 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:17:25,690 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:17:25,690 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:17:25,691 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:17:25,691 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:17:25,691 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:17:25,691 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:17:25,712 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-19 00:17:25,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 00:17:25,720 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:17:25,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:17:25,721 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:17:25,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:17:25,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-19 00:17:25,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:17:25,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655730247] [2020-08-19 00:17:25,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:17:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:25,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:17:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:25,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:17:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:26,010 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 00:17:26,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655730247] [2020-08-19 00:17:26,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:17:26,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:17:26,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248241303] [2020-08-19 00:17:26,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:17:26,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:17:26,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:17:26,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:17:26,036 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-19 00:17:26,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:17:26,359 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-19 00:17:26,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:17:26,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-19 00:17:26,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:17:26,374 INFO L225 Difference]: With dead ends: 142 [2020-08-19 00:17:26,374 INFO L226 Difference]: Without dead ends: 69 [2020-08-19 00:17:26,378 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 00:17:26,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-19 00:17:26,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-19 00:17:26,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-19 00:17:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-19 00:17:26,429 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-19 00:17:26,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:17:26,429 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-19 00:17:26,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:17:26,430 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-19 00:17:26,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 00:17:26,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:17:26,431 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] [2020-08-19 00:17:26,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:17:26,432 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:17:26,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:17:26,432 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-19 00:17:26,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:17:26,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069144810] [2020-08-19 00:17:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:17:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:17:26,496 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:17:26,496 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:17:26,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:17:26,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:17:26 BoogieIcfgContainer [2020-08-19 00:17:26,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:17:26,523 INFO L168 Benchmark]: Toolchain (without parser) took 2183.24 ms. Allocated memory was 138.9 MB in the beginning and 233.8 MB in the end (delta: 94.9 MB). Free memory was 101.8 MB in the beginning and 192.6 MB in the end (delta: -90.8 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:26,524 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 00:17:26,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 518.10 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 101.6 MB in the beginning and 175.9 MB in the end (delta: -74.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:26,526 INFO L168 Benchmark]: Boogie Preprocessor took 76.49 ms. Allocated memory is still 201.3 MB. Free memory was 175.9 MB in the beginning and 172.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:26,527 INFO L168 Benchmark]: RCFGBuilder took 685.07 ms. Allocated memory is still 201.3 MB. Free memory was 172.8 MB in the beginning and 136.4 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:26,528 INFO L168 Benchmark]: TraceAbstraction took 898.36 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 136.4 MB in the beginning and 192.6 MB in the end (delta: -56.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 00:17:26,532 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 518.10 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 101.6 MB in the beginning and 175.9 MB in the end (delta: -74.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.49 ms. Allocated memory is still 201.3 MB. Free memory was 175.9 MB in the beginning and 172.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 685.07 ms. Allocated memory is still 201.3 MB. Free memory was 172.8 MB in the beginning and 136.4 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 898.36 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 136.4 MB in the beginning and 192.6 MB in the end (delta: -56.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...