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_1130b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:45:05,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:45:05,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:45:05,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:45:05,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:45:05,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:45:05,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:45:05,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:45:05,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:45:05,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:45:05,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:45:05,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:45:05,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:45:05,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:45:05,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:45:05,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:45:05,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:45:05,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:45:05,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:45:05,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:45:05,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:45:05,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:45:05,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:45:05,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:45:05,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:45:05,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:45:05,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:45:05,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:45:05,129 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 01:45:05,149 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:45:05,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:45:05,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:45:05,150 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:45:05,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:45:05,151 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:45:05,151 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:45:05,151 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:45:05,152 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:45:05,152 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:45:05,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:45:05,154 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:45:05,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:45:05,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:45:05,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:45:05,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:45:05,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:45:05,156 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:45:05,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:45:05,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:45:05,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:45:05,157 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:45:05,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:45:05,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:45:05,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:45:05,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:45:05,158 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:45:05,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:45:05,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:45:05,158 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:45:05,197 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:45:05,209 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:45:05,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:45:05,215 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:45:05,216 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:45:05,216 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130b.c [2019-09-10 01:45:05,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/627fdc44f/39a5067e85bf4d1fab5954cfe24105ee/FLAG535a6b880 [2019-09-10 01:45:05,762 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:45:05,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130b.c [2019-09-10 01:45:05,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/627fdc44f/39a5067e85bf4d1fab5954cfe24105ee/FLAG535a6b880 [2019-09-10 01:45:06,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/627fdc44f/39a5067e85bf4d1fab5954cfe24105ee [2019-09-10 01:45:06,109 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:45:06,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:45:06,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:45:06,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:45:06,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:45:06,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:45:06" (1/1) ... [2019-09-10 01:45:06,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@200f2ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:06, skipping insertion in model container [2019-09-10 01:45:06,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:45:06" (1/1) ... [2019-09-10 01:45:06,127 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:45:06,149 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:45:06,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:45:06,555 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:45:06,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:45:06,619 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:45:06,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:06 WrapperNode [2019-09-10 01:45:06,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:45:06,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:45:06,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:45:06,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:45:06,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:06" (1/1) ... [2019-09-10 01:45:06,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:06" (1/1) ... [2019-09-10 01:45:06,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:06" (1/1) ... [2019-09-10 01:45:06,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:06" (1/1) ... [2019-09-10 01:45:06,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:06" (1/1) ... [2019-09-10 01:45:06,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:06" (1/1) ... [2019-09-10 01:45:06,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:06" (1/1) ... [2019-09-10 01:45:06,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:45:06,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:45:06,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:45:06,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:45:06,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:06" (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 01:45:06,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:45:06,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:45:06,748 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2019-09-10 01:45:06,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2019-09-10 01:45:06,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:45:06,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:45:06,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-10 01:45:06,749 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2019-09-10 01:45:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:45:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-10 01:45:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:45:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:45:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-10 01:45:06,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:45:06,752 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2019-09-10 01:45:06,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:45:06,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:45:06,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-09-10 01:45:06,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:45:07,293 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:45:07,294 INFO L283 CfgBuilder]: Removed 14 assume(true) statements. [2019-09-10 01:45:07,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:45:07 BoogieIcfgContainer [2019-09-10 01:45:07,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:45:07,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:45:07,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:45:07,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:45:07,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:45:06" (1/3) ... [2019-09-10 01:45:07,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72be6fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:45:07, skipping insertion in model container [2019-09-10 01:45:07,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:06" (2/3) ... [2019-09-10 01:45:07,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72be6fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:45:07, skipping insertion in model container [2019-09-10 01:45:07,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:45:07" (3/3) ... [2019-09-10 01:45:07,304 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130b.c [2019-09-10 01:45:07,314 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:45:07,322 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:45:07,338 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:45:07,371 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:45:07,371 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:45:07,372 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:45:07,372 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:45:07,372 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:45:07,372 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:45:07,372 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:45:07,373 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:45:07,396 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2019-09-10 01:45:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-10 01:45:07,408 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:07,409 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:07,411 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:07,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1543712029, now seen corresponding path program 1 times [2019-09-10 01:45:07,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:07,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:07,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:07,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:07,472 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:07,613 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 01:45:07,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:07,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:45:07,616 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:07,620 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:45:07,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:45:07,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:45:07,637 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2019-09-10 01:45:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:07,655 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2019-09-10 01:45:07,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:45:07,656 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-09-10 01:45:07,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:07,668 INFO L225 Difference]: With dead ends: 57 [2019-09-10 01:45:07,669 INFO L226 Difference]: Without dead ends: 52 [2019-09-10 01:45:07,671 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:45:07,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-09-10 01:45:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-09-10 01:45:07,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-09-10 01:45:07,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2019-09-10 01:45:07,714 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 19 [2019-09-10 01:45:07,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:07,714 INFO L475 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2019-09-10 01:45:07,715 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:45:07,715 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2019-09-10 01:45:07,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-10 01:45:07,716 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:07,716 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:07,716 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:07,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:07,717 INFO L82 PathProgramCache]: Analyzing trace with hash -193927133, now seen corresponding path program 1 times [2019-09-10 01:45:07,717 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:07,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:07,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:07,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:07,719 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:07,764 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:45:07,764 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:45:07,764 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 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:45:07,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:07,779 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:45:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:45:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:45:07,870 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:45:07,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:45:07 BoogieIcfgContainer [2019-09-10 01:45:07,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:45:07,914 INFO L168 Benchmark]: Toolchain (without parser) took 1801.86 ms. Allocated memory was 134.2 MB in the beginning and 203.4 MB in the end (delta: 69.2 MB). Free memory was 89.7 MB in the beginning and 112.4 MB in the end (delta: -22.7 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:07,915 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory is still 108.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:45:07,917 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.53 ms. Allocated memory was 134.2 MB in the beginning and 203.4 MB in the end (delta: 69.2 MB). Free memory was 89.7 MB in the beginning and 177.2 MB in the end (delta: -87.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:07,919 INFO L168 Benchmark]: Boogie Preprocessor took 70.39 ms. Allocated memory is still 203.4 MB. Free memory was 177.2 MB in the beginning and 174.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:07,920 INFO L168 Benchmark]: RCFGBuilder took 604.62 ms. Allocated memory is still 203.4 MB. Free memory was 174.6 MB in the beginning and 146.6 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:07,921 INFO L168 Benchmark]: TraceAbstraction took 614.31 ms. Allocated memory is still 203.4 MB. Free memory was 145.8 MB in the beginning and 112.4 MB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:07,933 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory is still 108.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 508.53 ms. Allocated memory was 134.2 MB in the beginning and 203.4 MB in the end (delta: 69.2 MB). Free memory was 89.7 MB in the beginning and 177.2 MB in the end (delta: -87.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.39 ms. Allocated memory is still 203.4 MB. Free memory was 177.2 MB in the beginning and 174.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 604.62 ms. Allocated memory is still 203.4 MB. Free memory was 174.6 MB in the beginning and 146.6 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 614.31 ms. Allocated memory is still 203.4 MB. Free memory was 145.8 MB in the beginning and 112.4 MB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 30, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=9, \old(Zero_fmod)=7, one_fmod=1, Zero_fmod={-1:0}] [L126] float x = -0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=1, Zero_fmod={-1:0}] [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=1, one_fmod=1, Zero_fmod={-1:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=1, one_fmod=1, x=0, y=1, Zero_fmod={-1:0}] [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=1, one_fmod=1, sx=5904, x=0, y=1, Zero_fmod={-1:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=1, \result=-1, hx=0, hy=2139095041, one_fmod=1, sx=5904, x=0, y=1, Zero_fmod={-1:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=-1, one_fmod=1, x=0, y=1, Zero_fmod={-1:0}] [L131] float res = fmod_float(x, y); [L134] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [one_fmod=1, res=-1, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=1, Zero_fmod={-1:0}] [L134] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L135] __VERIFIER_error() VAL [one_fmod=1, res=-1, x=0, y=1, Zero_fmod={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 0.0s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...