/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:29:18,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:29:18,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:29:19,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:29:19,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:29:19,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:29:19,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:29:19,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:29:19,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:29:19,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:29:19,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:29:19,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:29:19,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:29:19,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:29:19,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:29:19,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:29:19,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:29:19,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:29:19,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:29:19,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:29:19,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:29:19,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:29:19,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:29:19,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:29:19,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:29:19,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:29:19,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:29:19,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:29:19,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:29:19,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:29:19,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:29:19,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:29:19,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:29:19,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:29:19,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:29:19,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:29:19,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:29:19,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:29:19,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:29:19,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:29:19,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:29:19,065 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 [2020-08-18 10:29:19,112 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:29:19,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:29:19,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:29:19,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:29:19,117 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:29:19,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:29:19,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:29:19,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:29:19,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:29:19,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:29:19,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:29:19,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:29:19,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:29:19,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:29:19,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:29:19,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:29:19,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:29:19,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:29:19,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:29:19,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:29:19,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:29:19,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:29:19,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:29:19,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:29:19,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:29:19,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:29:19,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:29:19,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:29:19,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:29:19,123 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 -> false [2020-08-18 10:29:19,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:29:19,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:29:19,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:29:19,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:29:19,484 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:29:19,486 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-18 10:29:19,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e2e28b62/001006bc31554445999631a42cff1ad3/FLAG023ac072a [2020-08-18 10:29:20,067 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:29:20,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-18 10:29:20,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e2e28b62/001006bc31554445999631a42cff1ad3/FLAG023ac072a [2020-08-18 10:29:20,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e2e28b62/001006bc31554445999631a42cff1ad3 [2020-08-18 10:29:20,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:29:20,390 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:29:20,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:29:20,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:29:20,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:29:20,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:29:20" (1/1) ... [2020-08-18 10:29:20,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cfafcce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:20, skipping insertion in model container [2020-08-18 10:29:20,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:29:20" (1/1) ... [2020-08-18 10:29:20,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:29:20,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:29:20,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:29:20,713 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:29:20,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:29:20,895 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:29:20,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:20 WrapperNode [2020-08-18 10:29:20,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:29:20,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:29:20,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:29:20,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:29:20,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:20" (1/1) ... [2020-08-18 10:29:20,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:20" (1/1) ... [2020-08-18 10:29:20,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:20" (1/1) ... [2020-08-18 10:29:20,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:20" (1/1) ... [2020-08-18 10:29:20,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:20" (1/1) ... [2020-08-18 10:29:20,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:20" (1/1) ... [2020-08-18 10:29:20,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:20" (1/1) ... [2020-08-18 10:29:20,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:29:20,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:29:20,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:29:20,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:29:20,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:20" (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 [2020-08-18 10:29:21,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:29:21,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:29:21,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 10:29:21,013 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-18 10:29:21,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-18 10:29:21,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:29:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:29:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 10:29:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 10:29:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-18 10:29:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:29:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 10:29:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:29:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:29:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 10:29:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:29:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-18 10:29:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:29:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:29:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 10:29:21,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:29:21,584 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:29:21,585 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-18 10:29:21,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:29:21 BoogieIcfgContainer [2020-08-18 10:29:21,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:29:21,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:29:21,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:29:21,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:29:21,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:29:20" (1/3) ... [2020-08-18 10:29:21,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b12b6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:29:21, skipping insertion in model container [2020-08-18 10:29:21,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:20" (2/3) ... [2020-08-18 10:29:21,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b12b6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:29:21, skipping insertion in model container [2020-08-18 10:29:21,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:29:21" (3/3) ... [2020-08-18 10:29:21,598 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-18 10:29:21,609 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:29:21,618 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:29:21,630 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:29:21,651 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:29:21,651 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:29:21,651 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:29:21,651 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:29:21,652 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:29:21,652 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:29:21,652 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:29:21,652 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:29:21,671 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-18 10:29:21,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 10:29:21,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:29:21,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:29:21,680 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:29:21,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:29:21,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-18 10:29:21,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:29:21,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89268798] [2020-08-18 10:29:21,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:29:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:21,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:29:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:21,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:29:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:21,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:29:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:29:21,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89268798] [2020-08-18 10:29:21,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:29:21,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:29:21,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547073449] [2020-08-18 10:29:21,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:29:21,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:29:22,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:29:22,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:29:22,004 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-18 10:29:22,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:29:22,346 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-18 10:29:22,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:29:22,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 10:29:22,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:29:22,364 INFO L225 Difference]: With dead ends: 138 [2020-08-18 10:29:22,365 INFO L226 Difference]: Without dead ends: 68 [2020-08-18 10:29:22,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:29:22,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-18 10:29:22,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-18 10:29:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-18 10:29:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-18 10:29:22,427 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-18 10:29:22,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:29:22,427 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-18 10:29:22,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:29:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-18 10:29:22,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 10:29:22,429 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:29:22,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:29:22,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:29:22,430 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:29:22,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:29:22,431 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-18 10:29:22,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:29:22,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978153213] [2020-08-18 10:29:22,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:29:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:29:22,540 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:29:22,541 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:29:22,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:29:22,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:29:22 BoogieIcfgContainer [2020-08-18 10:29:22,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:29:22,568 INFO L168 Benchmark]: Toolchain (without parser) took 2177.17 ms. Allocated memory was 142.6 MB in the beginning and 232.8 MB in the end (delta: 90.2 MB). Free memory was 104.0 MB in the beginning and 184.9 MB in the end (delta: -80.9 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-18 10:29:22,569 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 142.6 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 10:29:22,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 505.04 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 103.8 MB in the beginning and 179.6 MB in the end (delta: -75.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-18 10:29:22,571 INFO L168 Benchmark]: Boogie Preprocessor took 60.66 ms. Allocated memory is still 203.9 MB. Free memory was 179.0 MB in the beginning and 176.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-18 10:29:22,572 INFO L168 Benchmark]: RCFGBuilder took 632.55 ms. Allocated memory is still 203.9 MB. Free memory was 176.5 MB in the beginning and 140.4 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2020-08-18 10:29:22,572 INFO L168 Benchmark]: TraceAbstraction took 973.69 ms. Allocated memory was 203.9 MB in the beginning and 232.8 MB in the end (delta: 28.8 MB). Free memory was 139.8 MB in the beginning and 184.9 MB in the end (delta: -45.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 10:29:22,576 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 142.6 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 505.04 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 103.8 MB in the beginning and 179.6 MB in the end (delta: -75.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.66 ms. Allocated memory is still 203.9 MB. Free memory was 179.0 MB in the beginning and 176.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 632.55 ms. Allocated memory is still 203.9 MB. Free memory was 176.5 MB in the beginning and 140.4 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 973.69 ms. Allocated memory was 203.9 MB in the beginning and 232.8 MB in the end (delta: 28.8 MB). Free memory was 139.8 MB in the beginning and 184.9 MB in the end (delta: -45.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: 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 someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] 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); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 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: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...