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 -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0920a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:44:39,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:44:39,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:44:39,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:44:39,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:44:39,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:44:39,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:44:39,508 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:44:39,523 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:44:39,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:44:39,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:44:39,524 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:44:39,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:44:39,525 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:44:39,525 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:44:39,525 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:44:39,525 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:44:39,525 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:44:39,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:44:39,526 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:44:39,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:44:39,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:44:39,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:44:39,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:44:39,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:44:39,527 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:44:39,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:44:39,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:44:39,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:44:39,528 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:44:39,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:44:39,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:44:39,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:44:39,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:44:39,529 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:44:39,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:44:39,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:44:39,530 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:44:39,558 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:44:39,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:44:39,574 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:44:39,576 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:44:39,576 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:44:39,577 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0920a.c [2019-09-10 01:44:39,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f72c9dbd4/2f851419df864fabb1cd77ecd1361fa9/FLAG71c6e45c1 [2019-09-10 01:44:40,103 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:44:40,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0920a.c [2019-09-10 01:44:40,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f72c9dbd4/2f851419df864fabb1cd77ecd1361fa9/FLAG71c6e45c1 [2019-09-10 01:44:40,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f72c9dbd4/2f851419df864fabb1cd77ecd1361fa9 [2019-09-10 01:44:40,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:44:40,448 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:44:40,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:44:40,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:44:40,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:44:40,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:44:40" (1/1) ... [2019-09-10 01:44:40,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a187b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:40, skipping insertion in model container [2019-09-10 01:44:40,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:44:40" (1/1) ... [2019-09-10 01:44:40,470 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:44:40,507 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:44:40,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:44:40,754 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:44:40,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:44:40,904 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:44:40,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:40 WrapperNode [2019-09-10 01:44:40,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:44:40,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:44:40,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:44:40,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:44:40,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:40" (1/1) ... [2019-09-10 01:44:40,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:40" (1/1) ... [2019-09-10 01:44:40,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:40" (1/1) ... [2019-09-10 01:44:40,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:40" (1/1) ... [2019-09-10 01:44:40,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:40" (1/1) ... [2019-09-10 01:44:40,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:40" (1/1) ... [2019-09-10 01:44:40,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:40" (1/1) ... [2019-09-10 01:44:40,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:44:40,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:44:40,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:44:40,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:44:40,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-10 01:44:41,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:44:41,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:44:41,028 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2019-09-10 01:44:41,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2019-09-10 01:44:41,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2019-09-10 01:44:41,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2019-09-10 01:44:41,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:44:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:44:41,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-10 01:44:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2019-09-10 01:44:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:44:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-10 01:44:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:44:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:44:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2019-09-10 01:44:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:44:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-10 01:44:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2019-09-10 01:44:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2019-09-10 01:44:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:44:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:44:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:44:41,537 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:44:41,537 INFO L283 CfgBuilder]: Removed 10 assume(true) statements. [2019-09-10 01:44:41,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:44:41 BoogieIcfgContainer [2019-09-10 01:44:41,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:44:41,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:44:41,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:44:41,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:44:41,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:44:40" (1/3) ... [2019-09-10 01:44:41,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aea06aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:44:41, skipping insertion in model container [2019-09-10 01:44:41,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:40" (2/3) ... [2019-09-10 01:44:41,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aea06aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:44:41, skipping insertion in model container [2019-09-10 01:44:41,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:44:41" (3/3) ... [2019-09-10 01:44:41,546 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0920a.c [2019-09-10 01:44:41,554 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:44:41,563 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:44:41,579 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:44:41,601 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:44:41,601 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:44:41,601 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:44:41,601 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:44:41,601 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:44:41,602 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:44:41,602 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:44:41,602 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:44:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-09-10 01:44:41,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-10 01:44:41,627 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:44:41,628 INFO L399 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] [2019-09-10 01:44:41,630 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:44:41,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:44:41,636 INFO L82 PathProgramCache]: Analyzing trace with hash 242834202, now seen corresponding path program 1 times [2019-09-10 01:44:41,638 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:44:41,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:41,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:44:41,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:41,682 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:44:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:44:41,816 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-09-10 01:44:41,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:44:41,816 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:44:41,818 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-10 01:44:41,819 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 01:44:41,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:44:41,819 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:44:41,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:44:41,847 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 01:44:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:44:41,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-10 01:44:41,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:44:41,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:44:41,946 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:44:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:44:41,980 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:44:41,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-09-10 01:44:41,981 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:44:41,986 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:44:42,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:44:42,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:44:42,005 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2019-09-10 01:44:42,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:44:42,042 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2019-09-10 01:44:42,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:44:42,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-09-10 01:44:42,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:44:42,056 INFO L225 Difference]: With dead ends: 52 [2019-09-10 01:44:42,056 INFO L226 Difference]: Without dead ends: 46 [2019-09-10 01:44:42,058 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:44:42,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-10 01:44:42,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2019-09-10 01:44:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-09-10 01:44:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2019-09-10 01:44:42,101 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 23 [2019-09-10 01:44:42,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:44:42,101 INFO L475 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2019-09-10 01:44:42,101 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:44:42,101 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2019-09-10 01:44:42,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-10 01:44:42,103 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:44:42,103 INFO L399 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, 1, 1] [2019-09-10 01:44:42,103 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:44:42,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:44:42,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1096180767, now seen corresponding path program 1 times [2019-09-10 01:44:42,104 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:44:42,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:42,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:44:42,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:42,106 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:44:42,146 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:44:42,146 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:44:42,146 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:44:42,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:44:42,167 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:44:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:44:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:44:42,324 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:44:42,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:44:42 BoogieIcfgContainer [2019-09-10 01:44:42,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:44:42,393 INFO L168 Benchmark]: Toolchain (without parser) took 1941.81 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 90.0 MB in the beginning and 91.6 MB in the end (delta: -1.6 MB). Peak memory consumption was 65.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:42,394 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 133.7 MB. Free memory was 108.2 MB in the beginning and 108.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:44:42,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.39 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 89.8 MB in the beginning and 175.0 MB in the end (delta: -85.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:42,396 INFO L168 Benchmark]: Boogie Preprocessor took 57.94 ms. Allocated memory is still 200.3 MB. Free memory was 175.0 MB in the beginning and 172.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:42,398 INFO L168 Benchmark]: RCFGBuilder took 575.29 ms. Allocated memory is still 200.3 MB. Free memory was 172.1 MB in the beginning and 145.1 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:42,399 INFO L168 Benchmark]: TraceAbstraction took 848.65 ms. Allocated memory is still 200.3 MB. Free memory was 145.1 MB in the beginning and 91.6 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:42,409 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 133.7 MB. Free memory was 108.2 MB in the beginning and 108.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 451.39 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 89.8 MB in the beginning and 175.0 MB in the end (delta: -85.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.94 ms. Allocated memory is still 200.3 MB. Free memory was 175.0 MB in the beginning and 172.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 575.29 ms. Allocated memory is still 200.3 MB. Free memory was 172.1 MB in the beginning and 145.1 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 848.65 ms. Allocated memory is still 200.3 MB. Free memory was 145.1 MB in the beginning and 91.6 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 140]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 43. Possible FailurePath: [L24-L28] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L30] static const float zero_log = 0.0; VAL [\old(Lg1_log)=9, \old(Lg2_log)=3, \old(Lg3_log)=4, \old(Lg4_log)=10, \old(Lg5_log)=8, \old(Lg6_log)=11, \old(Lg7_log)=6, \old(ln2_hi_log)=1, \old(ln2_lo_log)=2, \old(two25_log)=5, \old(zero_log)=7, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L132] float x = __VERIFIER_nondet_float(); [L134] EXPR x < 0 && isfinite_float(x) VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=-1, x < 0 && isfinite_float(x)=1, zero_log=0] [L134] CALL, EXPR isfinite_float(x) VAL [\old(x)=-1, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L115] __int32_t ix; VAL [\old(x)=-1, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=-1, zero_log=0] [L117] ieee_float_shape_type gf_u; [L118] gf_u.value = (x) [L119] EXPR gf_u.word [L119] (ix) = gf_u.word [L121] ix &= 0x7fffffff [L122] return (((ix) < 0x7f800000L)); VAL [\old(x)=-1, \result=1, ix=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=-1, zero_log=0] [L134] RET, EXPR isfinite_float(x) VAL [isfinite_float(x)=1, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=-1, x < 0 && isfinite_float(x)=1, zero_log=0] [L134] EXPR x < 0 && isfinite_float(x) VAL [isfinite_float(x)=1, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=-1, x < 0 && isfinite_float(x)=1, zero_log=0] [L134] COND TRUE (x < 0 && isfinite_float(x)) [L136] CALL, EXPR __ieee754_logf(x) VAL [\old(x)=-1, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L33] float hfsq, f, s, z, R, w, t1, t2, dk; [L34] __int32_t k, ix, i, j; VAL [\old(x)=-1, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=-1, zero_log=0] [L37] ieee_float_shape_type gf_u; [L38] gf_u.value = (x) [L39] EXPR gf_u.word [L39] (ix) = gf_u.word [L42] k = 0 VAL [\old(x)=-1, ix=1888, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=-1, zero_log=0] [L43] COND TRUE ((ix & 0x7fffffff) == 0) [L44] return -two25_log / zero_log; VAL [\old(x)=-1, \result=0, ix=1888, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=-1, zero_log=0] [L136] RET, EXPR __ieee754_logf(x) VAL [__ieee754_logf(x)=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=-1, zero_log=0] [L136] float res = __ieee754_logf(x); [L139] CALL, EXPR isnan_float(res) VAL [\old(x)=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L111] return x != x; VAL [\old(x)=0, \result=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=0, zero_log=0] [L139] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=0, two25_log=33554432, x=-1, zero_log=0] [L139] COND TRUE !isnan_float(res) [L140] __VERIFIER_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=0, two25_log=33554432, x=-1, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 60 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 62 SDtfs, 0 SDslu, 57 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 SizeOfPredicates, 0 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...