/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-eb0fd7c [2020-09-21 10:16:45,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:16:45,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:16:46,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:16:46,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:16:46,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:16:46,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:16:46,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:16:46,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:16:46,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:16:46,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:16:46,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:16:46,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:16:46,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:16:46,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:16:46,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:16:46,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:16:46,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:16:46,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:16:46,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:16:46,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:16:46,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:16:46,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:16:46,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:16:46,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:16:46,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:16:46,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:16:46,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:16:46,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:16:46,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:16:46,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:16:46,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:16:46,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:16:46,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:16:46,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:16:46,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:16:46,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:16:46,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:16:46,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:16:46,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:16:46,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:16:46,058 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 [2020-09-21 10:16:46,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:16:46,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:16:46,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:16:46,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:16:46,090 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:16:46,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:16:46,090 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:16:46,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:16:46,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:16:46,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:16:46,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:16:46,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:16:46,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:16:46,092 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:16:46,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:16:46,092 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:16:46,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:16:46,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:16:46,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:16:46,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:16:46,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:16:46,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:16:46,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:16:46,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:16:46,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:16:46,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:16:46,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:16:46,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:16:46,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:16:46,095 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 [2020-09-21 10:16:46,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:16:46,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:16:46,680 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:16:46,682 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:16:46,683 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:16:46,685 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-09-21 10:16:46,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bc848b35/1377ee7993784296baabea2e5de91794/FLAGdc317657f [2020-09-21 10:16:47,337 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:16:47,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-09-21 10:16:47,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bc848b35/1377ee7993784296baabea2e5de91794/FLAGdc317657f [2020-09-21 10:16:47,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bc848b35/1377ee7993784296baabea2e5de91794 [2020-09-21 10:16:47,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:16:47,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:16:47,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:47,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:16:47,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:16:47,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:47, skipping insertion in model container [2020-09-21 10:16:47,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:47" (1/1) ... [2020-09-21 10:16:47,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:16:47,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:16:48,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:48,182 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:16:48,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:48,354 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:16:48,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48 WrapperNode [2020-09-21 10:16:48,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:48,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:16:48,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:16:48,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:16:48,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (1/1) ... [2020-09-21 10:16:48,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (1/1) ... [2020-09-21 10:16:48,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (1/1) ... [2020-09-21 10:16:48,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (1/1) ... [2020-09-21 10:16:48,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (1/1) ... [2020-09-21 10:16:48,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (1/1) ... [2020-09-21 10:16:48,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (1/1) ... [2020-09-21 10:16:48,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:16:48,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:16:48,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:16:48,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:16:48,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (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 [2020-09-21 10:16:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:16:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:16:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 10:16:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-21 10:16:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-21 10:16:48,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:16:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:16:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-21 10:16:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 10:16:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-21 10:16:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:16:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 10:16:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:16:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:16:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 10:16:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:16:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-21 10:16:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:16:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:16:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-21 10:16:48,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:16:49,167 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:16:49,168 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-21 10:16:49,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:49 BoogieIcfgContainer [2020-09-21 10:16:49,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:16:49,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:16:49,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:16:49,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:16:49,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:16:47" (1/3) ... [2020-09-21 10:16:49,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2cc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:49, skipping insertion in model container [2020-09-21 10:16:49,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:48" (2/3) ... [2020-09-21 10:16:49,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2cc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:49, skipping insertion in model container [2020-09-21 10:16:49,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:49" (3/3) ... [2020-09-21 10:16:49,195 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-09-21 10:16:49,207 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:16:49,221 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:16:49,241 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:16:49,268 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:16:49,268 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:16:49,268 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:16:49,268 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:16:49,268 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:16:49,269 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:16:49,269 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:16:49,269 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:16:49,294 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-21 10:16:49,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 10:16:49,303 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:49,304 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] [2020-09-21 10:16:49,305 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:49,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-09-21 10:16:49,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:49,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152267642] [2020-09-21 10:16:49,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:16:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:16:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 10:16:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:16:49,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152267642] [2020-09-21 10:16:49,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:16:49,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:16:49,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050906401] [2020-09-21 10:16:49,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:16:49,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:16:49,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:16:49,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:16:49,695 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-09-21 10:16:50,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:16:50,055 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-09-21 10:16:50,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:16:50,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 10:16:50,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:16:50,071 INFO L225 Difference]: With dead ends: 138 [2020-09-21 10:16:50,071 INFO L226 Difference]: Without dead ends: 68 [2020-09-21 10:16:50,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:16:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-21 10:16:50,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-21 10:16:50,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-21 10:16:50,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-09-21 10:16:50,136 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-09-21 10:16:50,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:16:50,137 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-09-21 10:16:50,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:16:50,137 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-09-21 10:16:50,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 10:16:50,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:50,139 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] [2020-09-21 10:16:50,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:16:50,140 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:50,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:50,140 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-09-21 10:16:50,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:50,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421713250] [2020-09-21 10:16:50,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:16:50,375 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:16:50,376 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:16:50,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:16:50,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:16:50 BoogieIcfgContainer [2020-09-21 10:16:50,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:16:50,437 INFO L168 Benchmark]: Toolchain (without parser) took 2782.35 ms. Allocated memory was 115.3 MB in the beginning and 185.6 MB in the end (delta: 70.3 MB). Free memory was 73.4 MB in the beginning and 122.1 MB in the end (delta: -48.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:50,438 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 115.3 MB. Free memory was 91.3 MB in the beginning and 91.2 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-09-21 10:16:50,439 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.35 ms. Allocated memory was 115.3 MB in the beginning and 164.6 MB in the end (delta: 49.3 MB). Free memory was 72.9 MB in the beginning and 147.0 MB in the end (delta: -74.1 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:50,440 INFO L168 Benchmark]: Boogie Preprocessor took 79.55 ms. Allocated memory is still 164.6 MB. Free memory was 147.0 MB in the beginning and 144.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:50,441 INFO L168 Benchmark]: RCFGBuilder took 742.84 ms. Allocated memory is still 164.6 MB. Free memory was 144.2 MB in the beginning and 108.1 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:50,442 INFO L168 Benchmark]: TraceAbstraction took 1250.54 ms. Allocated memory was 164.6 MB in the beginning and 185.6 MB in the end (delta: 21.0 MB). Free memory was 107.7 MB in the beginning and 122.1 MB in the end (delta: -14.4 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:50,446 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 115.3 MB. Free memory was 91.3 MB in the beginning and 91.2 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 697.35 ms. Allocated memory was 115.3 MB in the beginning and 164.6 MB in the end (delta: 49.3 MB). Free memory was 72.9 MB in the beginning and 147.0 MB in the end (delta: -74.1 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.55 ms. Allocated memory is still 164.6 MB. Free memory was 147.0 MB in the beginning and 144.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 742.84 ms. Allocated memory is still 164.6 MB. Free memory was 144.2 MB in the beginning and 108.1 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1250.54 ms. Allocated memory was 164.6 MB in the beginning and 185.6 MB in the end (delta: 21.0 MB). Free memory was 107.7 MB in the beginning and 122.1 MB in the end (delta: -14.4 MB). Peak memory consumption was 6.6 MB. 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: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, 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, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.2s 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...